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Dr Helena Santos (LIP)21/07/2011 09:00Parallel session talkA wide research program provided by heavy ion collisions is ongoing at the Large Hadron Collider with the aim of studying the properties of QCD matter at extreme temperatures and densities. The large acceptance, high granularity and broad pseudorapidity coverage of the ATLAS Detector is well suited to perform detailed analyses on bulk phenomena, jets and leptonic probes. Measurements of these...Go to contribution page
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Joerg Behr21/07/2011 09:00Parallel session talkDifferential inclusive-jet cross sections have been measured in photoproduction for boson virtualities Q2 < 1 GeV2 with the ZEUS detector at HERA using an integrated luminosity of 300 pb-1. These cross sections have the potential to constrain the gluon density in the proton and the photon when included as input to fits to extract the proton parton distribution functions. A value of...Go to contribution page
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Alexander Kappes (Humboldt-University Berlin / DESY)21/07/2011 09:00
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Dr Fanrong Xu (National Taiwan University)21/07/2011 09:00Flavour Physics and Fundamental SymmetriesParallel session talkNew experiments under construction aim to push neutron electric dipole moment down by one to two orders of magnitude, to an eventual sensitivity of 10^{−28} e cm. The Standard Model would still be out of reach. However, there is renewed interest in the direct search for a possible fourth generation of quarks, which may carry sufficient CP violation for the baryon asymmetry of the Universe. We...Go to contribution page
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German Rodrigo21/07/2011 09:00Parallel session talkTevatron anomalies and LHC cross-checksGo to contribution page
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Dr Roberto Bonciani (LPSC)21/07/2011 09:00Mini-review.Go to contribution page
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Artem Baghdasaryan21/07/2011 09:15Parallel session talkInclusive-jet, dijet and trijet differential cross sections have been measured in neutral current deep-inelastic ep scattering for exchanged boson virtualities 150 < Q2 < 15000 GeV2 with the H1 detector at HERA. The measurements are used to determine value of the strong coupling alpha_s(M_Z). Additionally, the production of jets is studied at low four momentum transfer squared $5 < Q2 < 100...Go to contribution page
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Dr Peter Geltenbort (Institut Laue-Langevin)21/07/2011 09:15Flavour Physics and Fundamental SymmetriesParallel session talkDue to their outstanding property to be storable and hence observable for long periods of time (several hundreds of seconds) in suitable material or magnetic traps, ultra-cold neutrons (UCN) with energies around 100 neV are an unique tool to study fundamental properties of the free neutron, like its beta-decay lifetime, its electric dipole moment and its wave properties. The search for the...Go to contribution page
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Nicolas Houdeau (LPTHE (CNRS - UPMC))21/07/2011 09:30We consider the problem of assigning a meaningful confidence to uncertainty estimates of perturbative series. We analyse the assumptions which are implicit in the conventional estimates made using renormalisation scale variations. We then formulate a Bayesian model that, given equivalent initial hypotheses, allows one to characterise a perturbative theoretical uncertainty in a rigorous...Go to contribution page
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Shabnam Jabeen (Brown University)21/07/2011 09:30We present studies of single top production using the D0 experiment. Single top events are selected with an isolated electron or muon missing transverse energy, two, three or four jets, with one or of them identified as originating from the fragmentation of $b$ quarks. From the cross section measurement we obtain new bounds on the Kobayashi-Maskawa $|V_{tb}|$ matrix element. A...Go to contribution page
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Yen-Jie Lee (Massachusetts Institute of Technology)21/07/2011 09:30Parallel session talkWe will present results of the CMS experiment from PbPb collisions at $srqrt{s_{NN}}$ = 2.76 TeV, probing quark and gluon matter at unprecedented values of energy density. The CMS apparatus provides calorimetry, muon and tracking systems covering a large range in pseudorapidity, complemented by a flexible two-level trigger system. This allows us to study the production of jets, photons,...Go to contribution page
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damien dornic (IFIC)21/07/2011 09:30The ANTARES observatory is currently the largest neutrino telescope in the Northern Hemisphere. It is well suited to detect high energy neutrinos produced in astrophysical sources as it can observe a full hemisphere of the sky at all the times with a duty cycle close to unity and an angular resolution about 0.3 degrees. Due to its location in the South of France, ANTARES is sensitive to...Go to contribution page
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Dr Geza Zsigmond21/07/2011 09:30Flavour Physics and Fundamental SymmetriesParallel session talkThe search for a permanent neutron electric dipole moment with ultracold neutrons (UCN) is one of the prominent experiments to test CP-violation at the low-energy precision frontier. Extensions to the SM can provide enough CP violation to accommodate for the observed baryon asymmetry of the universe, while at the same time predicting nEDM values in the range of 10^-26 to 10^-28 ecm. This is...Go to contribution page
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Dr VIVIANA cavaliere (CDF Collaboration, University of Illinois at Urbana Champaign)21/07/2011 09:30Parallel session talkWe present an updated study of the invariant mass and other kinematic distributions of jet pairs produced in association with a $W$ boson using data collected with the CDF detector utilizing an integrated luminosity of $\sim$ 7~fb$^{-1}$. The distributions are compared in detail to the Standard Model predictions.Go to contribution page
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Dr Hans Pieter Mumm (NIST)21/07/2011 09:45Flavour Physics and Fundamental SymmetriesParallel session talkWe have measured the D-coefficient in the triple correlation of the neutron spin with proton and electron momenta by observing coincidences in the decay of polarized neutrons. A non-zero value of D can arise due to parity-even-time-reversal-odd interactions that imply CP violation due to the CPT theorem. (Final-state effects also contribute to D at the level of 1e-5 and can be calculated with...Go to contribution page
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Keith Jarid Rose21/07/2011 09:45We present inclusive jet and dijet cross-section measurements in proton-proton collisions at a center-of-mass energy of 7 TeV at the CERN LHC, using the 2010 data collected by the CMS experiment. The data are compared to NLO pQCD predictions and are found to be in good agreement.Go to contribution page
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Dr Jadranka Sekaric (University of Kansas)21/07/2011 09:45Parallel session talkWe present a study of the dijet invariant mass spectrum in events with at least two jets produced in association with a $W$ boson, using data collected with the D0 detector which correspond to an integrated luminosity of 4.3 fb$^{-1}$. We perform a detailed comparison of the observed distribution with the background prediction, taking into account systematic uncertainties, to check the...Go to contribution page
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Dr Apostolos Tsirigotis (Physics Laboratory, School of Science and Technology, Hellenic Open University)21/07/2011 09:45KM3NeT ($km^3$ Neutrino Telescope) will be one of the world’s largest particle detectors, built at the bottom of the Mediterranean Sea, providing a window for the observation of the Universe through high energy neutrinos. KM3NeT will complement the South Polar IceCube neutrino telescope in its field of view and significantly surpass it in sensitivity and discovery potential. The underwater...Go to contribution page
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Dominic Hirschbuehl21/07/2011 09:50We present the result of searches for single top-quark production in the t- and Wt-channels in 7 TeV proton-proton collisions with the ATLAS detector. The t-channel search is based on the selection of events with a single lepton (muon or electron), jets and missing transverse energy. The Wt-channel analysis is based on the selection of events with one or two leptons, jets and missing...Go to contribution page
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Dr Boris Hippolyte (IPHC Strasburg)21/07/2011 10:00Parallel session talkALICE (A Large Ion Collider Experiment) is the LHC experiment specifically designed to study QCD matter under extreme conditions of temperature and pressure. The aim is to study the Quark-Gluon Plasma obtained with high energy nucleus-nucleus collisions and to characterize its properties. Results from the ALICE experiment for sqrt(s_NN)=2.76 TeV Pb-Pb collisions will be presented and compared...Go to contribution page
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Prof. Panagiotis Kokkas (University of Ioannina - Greece)21/07/2011 10:00We present measurements sensitive to QCD multijet production using data from proton-proton collisions at sqrt(s) = 7 TeV collected with the CMS detector at the CERN LHC. The hadronic event shapes, the dijet azimuthal decorrelation and the ratio of the 3 jet to 2 jet production cross-sections confront the QCD multijet dynamics at a previously unexplored kinematic regime. The data are compared...Go to contribution page
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Dr Grégory MOREAU (LPT/Orsay)21/07/2011 10:00Parallel session talkThe last decade of particle physics beyond the Standard Model has seen extensive developments on an alternative to supersymmetry: the scenarios with warped extra dimensions. Those constitute a new paradigm in the sense that they are dual, through the AdS/CFT correspondence, to composite Higgs models. These scenarios predict strong deviations from the Standard Model mainly in the bottom and top...Go to contribution page
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Prof. Guey-Lin Lin (Institute of Physics, National Chiao-Tung University)21/07/2011 10:00The determination of neutrino flavor transition mechanism by neutrino telescopes is presented. We first propose a model-independent parameterization for flavor transitions (such as standard three-flavor oscillations, neutrino decays or others)of astrophysical neutrinos propagating from their sources to the Earth. We demonstrate how one can constrain parameters of the above parameterization...Go to contribution page
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Mme Aleksandra Adametz21/07/2011 10:00Flavour Physics and Fundamental SymmetriesParallel session talkWe report recent BABAR results in tau physics, including a search for CP violation in tau -> Ks0 pu nu, a search for second class currents in the process tau -> K/pi eta nu, and discuss recent results of exclusive branching fraction measurements related to V_us.Go to contribution page
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Alberto Orso Maria Iorio (stituto Nazionale di Fisica Nucleare (INFN))21/07/2011 10:10We present a measurement of the inclusive single top production cross section in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV, using data collected with the CMS experiment during the year 2011. The analysis considers decay channels where the W from the top decays into electron-neutrino or muon-neutrino, and makes use of kinematic characteristics of electroweak...Go to contribution page
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Thorsten Kuhl21/07/2011 10:15Parallel session talkWe summarize the analysis of events with top, top-like and diboson final states in pp collision data recorded with the ATLAS detector. The data are compared to the Standard Model predictions with the goal of searching for new phenomena, e.g. searches for anomalous top-quark production and decay in several channels, including a search for top-quark pair production with anomalous missing...Go to contribution page
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M. Paolo Francavilla (Universita' di Pisa)21/07/2011 10:15Single and multiple et cross sections have been measured in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. The anti-kt algorithm is used to identify jets. Inclusive single-jet differential cross sections are presented as functions of jet transverse momentum and rapidity. Dijet cross sections are presented as functions of dijet mass and angle. The...Go to contribution page
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Henrik Melbéus (Royal Institute of Technology (KTH))21/07/2011 10:15We discuss experimental signatures of non-minimal Kaluza-Klein dark matter. In the minimal Universal Extra Dimensions model, there is a unique possible dark matter candidate, the first Kaluza-Klein excitation of the U(1) gauge boson B. On the other hand, in non-minimal models, allowing for general boundary localized terms, the mass spectrum is different, and such models allow for other dark...Go to contribution page
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Dr Kiyoshi Hayasaka (Nagoya University)21/07/2011 10:15Flavour Physics and Fundamental SymmetriesParallel session talkWe report results of a search for tau lepton decays strongly suppressed in the Standard Model based on the world-largest data sample accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. The decays include: lepton flavor and lepton number violating tau decays into a lepton (e or mu) and two charged mesons (K or pi), lepton flavor violating decays into a...Go to contribution page
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Eugenia Puccio21/07/2011 11:00Flavour Physics and Fundamental SymmetriesParallel session talkWe present recent BABAR results on charmless hadronic B decays. In particular, we measure the branching fractions, longitudinal polarization fraction f_L and charge asymmetry in B -> rho(f_0) K* events, and report results of studies of B -> phi phi K and B0->K+pi-pi0. We also present the results of a recent study of the inclusive branching fractions of B-meson decays to charmless final...Go to contribution page
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Javier Rico21/07/2011 11:00
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Dr Christian Schwanenberger (University of Manchester)21/07/2011 11:00We present measurements of the inclusive top quark pair production cross section in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV utilizing data collected with the D0 detector at the Fermilab Tevatron Collider. Results for the lepton (e or mu)+jet, dilepton, tau+jet and fully hadronic decay modes are provided. We also present a measurement of the forward-backward charge asymmetry in top...Go to contribution page
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Dr Peter Svoisky (University of Oklahoma)21/07/2011 11:00We present the first measurement of the inclusive three-jet differential cross section as a function of the invariant mass of the three jets with the largest transverse momenta in an event in $p\bar{p}$ collisions at $\sqrt{s}=1.96\, \mathrm{TeV}$. The measurement is made in different rapidity regions and for different jet transverse momentum requirements and is based on a data set...Go to contribution page
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Dr Jose Guilherme Milhano (CENTRA-IST, Lisbon & CERN PH-TH)21/07/2011 11:00Parallel session talkThe LHC offers unprecedented opportunities to study the jets produced in heavy ion collisions. The release of the first LHC heavy ion data on jets has been accompanied by a surge of related theoretical activity. These recent efforts have focused on the identification and development of necessary ingredients to promote and complement the existing theoretical formulations, originally developed...Go to contribution page
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Kai Yi21/07/2011 11:00Parallel session talkWe present results of a number of searches for new physics in all-hadronic final state using pp data at the center-of-mass energy of 7 TeV collected with the CMS detector at the LHC in 2010 and 2011. The sought signals include monojet production in models with large extra dimensions, high-mass resonances decaying in ttbar pairs in all-hadronic decay channel, microscopic black holes, quark...Go to contribution page
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Dr Simone Alioli (DESY)21/07/2011 11:15I will review recent developments and applications of the POWHEG method, to merge NLO calculations with Shower Monte Carlo programs, in the POWHEG-BOX framework. Particular emphasis will be given to comparisons with LHC data and on the implementation of new processes.Go to contribution page
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M. Denis Derkach21/07/2011 11:15Flavour Physics and Fundamental SymmetriesParallel session talkWe report on the study of the decay B+ ->D0(D0bar) K+ where the D0 or D0bar decaying to Kpipi0, with the Atwood Dunietz and Soni (ADS) method. We measure the ratios Rads, R+, and R- that, since the processes B+ -> D0barK+ and B+ -> D0K+ are proportional to Vcb and Vub, respectively, are sensitive to rB and to the weak phase gamma. We also report the results of CP violation studies of B->Dcp...Go to contribution page
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Adam Gibson21/07/2011 11:20Parallel session talkWe summarize the analysis of events with jets in the final state in pp collision data recorded with the ATLAS detector. The data are compared to Standard Model predictions with the goal of searching for new phenomena: heavy resonances, contact interactions and gravitationally-mediated effects in large extra dimensions, including gravitational scattering and quantum micro-black holes.Go to contribution page
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Dr Corinne Berat (LPSC, Université Joseph Fourier Grenoble 1, CNRS/IN2P3, Institut Polytechnique de Grenoble)21/07/2011 11:30Authorship: The Pierre Auger Collaboration The Pierre Auger Observatory is measuring the ultra-high energy cosmic ray extended air showers from simultaneous observation of fluorescence and surface detectors with unprecedented precision. The high statistics of the surface detector allows a good determination of the cosmic ray flux above an energy of 3 EeV. This bound is extended down to 1 EeV...Go to contribution page
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Andreas Meyer (DESY)21/07/2011 11:30We present several measurements of the top-pair production cross section in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV. We use data collected with the CMS experiment during the year 2011. Measurements are presented in the lepton+jets final state, where events are selected by requiring exactly one isolated and highly energetic muon or electron, and at least...Go to contribution page
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Dr Jeremy Dalseno (MPI, Munich)21/07/2011 11:30Flavour Physics and Fundamental SymmetriesParallel session talkWe present a time-dependent measurement of CP violation parameters in $B^0 \to \pi^+\pi^-$ decays. We present also a measurement of the branching fraction of $B^0 \to \rho^0 \rho^0$ decays, which could provide a tighter constraint of the CKM angle $\phi_2$. In addition we present measurements of branching ratios of other charmless $B$ decays into 4 charged pions. We present a...Go to contribution page
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M. Raz Alon (Weizmann Institute of Science)21/07/2011 11:30We present a study of the substructure of jets with transverse momentum greater than 400 GeV/c produced in proton-antiproton collisions at a center-of-mass energy of 1.96 TeV at the Fermilab Tevatron Collider and recorded by the CDF II detector. We measure for the first time the distributions of the jet mass, angularity and planar flow in a 5.95/fb data sample. The observed substructure...Go to contribution page
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Dr Chris Pinkenburg (BNL)21/07/2011 11:30Parallel session talkThe PHENIX Experiment at the Relativistic Heavy Ion Collider of the Brookhaven National Laboratory has been taking data for over 10 years. The accumulated data sets span multiple beam energies and collision systems that provide an increasingly detailed picture of the hot and dense medium produced in central heavy ion collisions. I will summarize our latest results and give an outlook of our...Go to contribution page
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Christos Leonidopoulos (FNAL)21/07/2011 11:40Parallel session talkWe present the results of a search for non-resonant signal for new physics in leptonic and photonic final states in pp collisions at 7 TeV collected with CMS in 2010 and 2011. These include searches for W'(lv), first and second generation leptoquarks, large extra dimensions in dilepton and diphoton channel, quark-lepton compositeness, anomalies in the transverse momentum of the leptonically...Go to contribution page
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Dr Paoti Chang (NTU, Taipei)21/07/2011 11:45Flavour Physics and Fundamental SymmetriesParallel session talkWe report the measurements of branching fractions and direct $CP$ asymmetries for neutral $B$ meson decays to the $hh$ final states, where $h$ stands for a pion or a kaon. We also study the charged $B$ meson decays into one charged and one neutral kaon or pion. We present improved measurements of the branching fraction and the $CP$ asymmetry of $B\to\eta h$. Here $h$ denotes...Go to contribution page
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Prof. Zoltan Trocsanyi (University of Debrecen)21/07/2011 11:45Parallel session talkWe introduce a twiki page with collections of generated event samples at LHC energies including a heavy quark-antiquark pair. These samples are generated with the POWHEG method and can be used to preparedistributions at the NLO accuracy with first radiation treated according to the parton shower approach. The event files are stored according to the Les Houches accord and standard parton...Go to contribution page
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Haris, for the Pierre Auger Collaboration Lyberis (Institut de Physique Nucléaire d'Orsay, Università degli Studi di Torino, Université Paris VII Denis Diderot)21/07/2011 11:45We report on the analysis of the distribution of the arrival directions of ultra high energy cosmic rays detected at the Pierre Auger Observatory. From $2.10^{17}~$eV to $3.10^{19}~$eV, we present the results of searches for first harmonic modulations in the right-ascension distribution of cosmic rays and discuss the obtained upper limits which constitute the most stringent bounds at present...Go to contribution page
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Tetiana Hryn'ova (LAPP)21/07/2011 12:00Parallel session talkStudies of leptons and photons at the Large Hadron Collider are some of the most direct and sensitive ways to search for new phenomena. We present the results based on data collected with the ATLAS detector at the LHC and discuss current sensitivities and future discovery prospects.Go to contribution page
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Dr Hernan Wahlberg (IFLP - Universidad Nacional de La Plata)21/07/2011 12:00Authorship: The Pierre Auger Collaboration The mass composition of ultra-high energy cosmic rays is a critical issue to understand their origin and nature. The Pierre Auger Observatory is a hybrid instrument which provides a powerful environment for the determination of the primary mass, being able to discriminate between photons, neutrinos and hadrons. Results on limits of photon and...Go to contribution page
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David Miller21/07/2011 12:00Parallel session talkThe internal properties of jets are sensitive to fragmentation and QCD radition. Jet substricture may be used to indentify the decays of boosted hadronically decaying particles. Measurements of jets shapes, of single-jet mass, of charged particle multiplcitites, and of some key substructure variables are presented and compared to QCD calculations.Go to contribution page
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Dr Michael Mitrovski (STAR Collaboration)21/07/2011 12:00Parallel session talkFor almost 30 years, hadron production in heavy ion collisions has been an important observable for probing the state of nuclear matter. Mapping out the phase diagram of strongly interacting matter is a challenging open task in quantum chromodynamics (QCD). The goal of the RHIC $Beam$ $Energy$ $Scan$ program (BES) is to study the phase diagram of strongly interacting matter to search for the...Go to contribution page
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Dr Andreas Scharf (SUNY Buffalo)21/07/2011 12:00I want to discuss the next-to-leading order QCD corrections to the production of a top-quark pair in association with a hard photon. This process allows a direct measurement of the top quark electromagnetic couplings. For a realistic description of this process we incorporated top quark and W-boson decays using the narrow width approximation. Photon radiation off top quark decay products...Go to contribution page
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Dr Michael Joseph Morello (INFN and University of Pisa)21/07/2011 12:00Flavour Physics and Fundamental SymmetriesParallel session talkWe present the updated analysis of Bd, Bs , and Lambda_b decays into charmless two-body final states using 6/fb of data collected by the CDF experiment. We report the first evidence for the pure-annihilation decay Bs->pi^+pi^- and improved limits on the Bd->K+K- branching ratio. We also report the first measurement of branching fractions and CP-violating asymmetries of ...Go to contribution page
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Dr Leonardo Vernazza (Johannes-Gutenberg-Universität)21/07/2011 12:15Extending previous results obtained in arXiv:0903.1126, we perform a diagrammatic analysis of the anomalous-dimension matrix of n-jet operators in SCET, investigating for possible new structures arising at 4 loop.Go to contribution page
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Dr takeo Higuchi (KEK, Tsukuba)21/07/2011 12:15Flavour Physics and Fundamental SymmetriesParallel session talkUsing the large data sample collected at the $\Upsilon(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^+e^-$ collider, we present an improved measurement of time-dependent CP violation in the neutral $B$ decays into charmonium and $K^0$. CPT is expected to be a fundamental symmetry with no significant deviations. Nonetheless we can introduce an artificial...Go to contribution page
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Dr Paolo Camarri (University of Roma "Tor Vergata" and INFN Roma Tor Vergata)21/07/2011 12:15The ARGO-YBJ detector, located 4300 m a.s.l. on the Tibet plateau, is a ground-based, full-coverage array of Resistive Plate Chambers (RPCs) covering a surface of 78 x 74 m^2, surrounded by a guard ring of RPCs enclosing a total surface of about 11000 m^2. ARGOYBJ was designed to detect extensive air showers generated by cosmic rays and gamma rays with primary energy greater than few hundred...Go to contribution page
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Jordan Tucker21/07/2011 12:20Parallel session talkWe discuss the results of searches for narrow resonances decaying into pairs of leptons, photons, or jets, using pp collisions at 7 TeV delivered by LHC and collected with the CMS detector in 2010 and 2011. These include searches for Z' bosons, RS gravitons, dijet resonances, and excited leptons.Go to contribution page
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Andreas von Manteuffel (University of Zurich)21/07/2011 12:20At LHC, top-quark pair production is an important process to test the Standard Model and search for new physics. I discuss an analytical approach to the virtual corrections at NNLO in QCD. Some technical details will be given for the methods employed in the calculation.Go to contribution page
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Prof. Alessia Tricomi (University and INFN Catania)21/07/2011 12:30The LHCf experiment is a double arm sampling calorimeter, installed +/-140 m away from the Atlas LHC interaction point. The detectors allow precise measurement of energy and impact point of the neutral particles (mainly photons and neutrons) produced very forward in the LHC proton-proton interactions, in the pseudorapidity region greater than 8; this measurement is crucial for the...Go to contribution page
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M. Francesco D'Eramo (MIT)21/07/2011 12:30Parallel session talkThe propagation of hard partons through the strongly interacting matter created in high energy heavy-ion collisions involves widely separated scales. The methods of Effective Field Theories (EFT) can provide a factorized description at lowest nontrivial order, and a formalism where the correction to this factorization are calculable systematically order by order in the small ratios...Go to contribution page
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M. Angelo Carbone21/07/2011 12:30Flavour Physics and Fundamental SymmetriesParallel session talkTemporary : merging of (abstracts 380,386,396) The relative abundances of the three decay modes B0 -> DK, B0 -> Dπ and Bs ->Dsπ produced in 7 TeV pp collisions at the LHC are determined from data corresponding to an integrated luminosity of ∼35 pb−1. The relative branching ratio of B0 -> DK with respect to B0 -> Dπ is found to be B(B0 ->DK) = (2.01 \pm 0.18 stat \pm 0.12 syst ) x...Go to contribution page
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Ignazio Scimemi (Univ. Complutense de Madrid)21/07/2011 12:30Soft-Collinear Effective Theory (SCET) has been in covariant gauges. We argue that SCET, as it stands, is not capable to define in a gauge invariant way certain non-perturbative matrix elements that are an integral part of many factorization theorems. Those matrix elements involve two quark or gluon fields separated not only in light-cone direction but also in the transverse one. This...Go to contribution page
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Jie Chen21/07/2011 12:35Parallel session talkSeveral models of new physics, including split supersymmetry, predict the existence of a heavy particle, which is long-lived on timescales of the bunch spacing of the LHC. We present the results of several searches for these particles, using various experimental techniques, from out-of-time decays in the CMS calorimeter to use of highly displaced vertices, timing, and dE/dx techniques. We...Go to contribution page
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Ben Pecjak (Johannes Gutenberg-Universitaet Mainz)21/07/2011 12:40Techniques and results concerning soft gluon resummation at the level of total and differential cross sections in top-quark pair production at hadron colliders are presented. In particular, the theoretical framework underlying resummation at NLO+NNLL level for differential cross sections is briefly review, and the consequences for observables such as the total inclusive pair-production...Go to contribution page
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Dr Cristina Carloganu (LPC Clermont Ferrand)21/07/2011 12:45Their capability to penetrate through large depths of material renders high-energy atmospheric muons a unique probe for geophysical studies. Provided the topography is known, the measurement of the attenuation of the muon flux permits a cartography of density distributions revealing spatial and possibly also temporal variations. A Collaboration between volcanologists, astroparticle- and...Go to contribution page
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Caterina Doglioni21/07/2011 12:45About one year after the first proton proton collisions at a centre of mass energy of sqrt(s)= 7 TeV the ATLAS experiment has achieved an accuracy of the jet energy measurement between 2-4% for jet transverse momenta from 20 GeV to 2 TeV in the pseudo-rapidity region up to eta=4.5. The jet energy scale uncertainty is derived from in-situ single hadron response measurement a long with...Go to contribution page
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Dr Roman Planeta (Institute of Physics Jagiellonian University)21/07/2011 12:45Parallel session talkThis presentation will summarize status and plans of the NA61/SHINE ion program. The NA61/SHINE at the CERN SPS facility is the successor of the former NA49 experiment. The study of central Pb+Pb collisions by NA49 indicate that the threshold for deconfinement is reached already at the low SPS energies. Theoretical considerations predict that SPS accelerator will cover one of the most...Go to contribution page
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M. Alberto Lusiani21/07/2011 12:45Flavour Physics and Fundamental SymmetriesParallel session talkThe study of B_{u,d,s} and D decays at SuperB can provide both stringent constraints on new physics scenarios, and over constraints on the CKM description of quark mixing and CP violation in the Standard Model. The rich landscape of new physics sensitive observables in both tree dominated and loop or flavor changing neutral current rare decays complements measurements possible at...Go to contribution page
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Dr Aidan Robson (Glasgow University)21/07/2011 12:50We report on a search for heavy resonances decaying into pairs of Z bosons using 6fb^-1 of ppbar collisions at sqrt(s)=2TeV collected by CDF. The analysis explores three final states corresponding to decays of Z pairs into four charged leptons, two charged leptons plus neutrinos, and two charged leptons plus jets. The results of the search are interpreted in the framework of theoretical...Go to contribution page
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Prof. Sudeshna Banerjee (Tata Institute of Fundamental Research)21/07/2011 14:30Parallel session talkWe report on a search for charged massive long-lived particles (CMLLPs), based on 5.2 fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron $p\bar{p}$ collider. CMLLPs are predicted in many theories of physics beyond the Standard Model. We look for events in which one or more particles are reconstructed as muons but have speed and ionization energy loss $dE/dx$...Go to contribution page
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Shiraz Habib21/07/2011 14:30Parallel session talkThe inclusive single differential cross section $d\sigma/dQ2$ and the reduced double differential cross section $\tilde{\sigma}(x,Q2)$ are presented for neutral and charged current processes, $e^{\pm}p \rightarrow \nu X$, in interactions with longitudinally polarised lepton beams using the complete HERA-II data set. The cross sections are measured in the region of large negative four-momentum...Go to contribution page
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Dr Javier L. Albacete (Universidade de Santiago de Compostela)21/07/2011 14:30Parallel session talkI will present a brief review of the different approaches to the description of bulk particle production in heavy ion collisions at RHIC and the LHC, with emphasis in the Color Glass Condensate approach (CGC). In the CGC approach coherence effects are taken into account through non-linear QCD renormalization group equations and also in the use of semi-classical methods appropriate at high...Go to contribution page
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Maria Jose Costa21/07/2011 14:30We present measurements of the top-quark pair-production in proton-proton collisions at sqrt(s)= 7 TeV with the ATLAS detector at the Large Hadron Collider. The cross section is measured in several channels, including the single lepton, dilepton and all hadronic channel, some using information from b-tagging.Go to contribution page
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Dr Teresa Marrodán Undagoitia (Universität Zürich)21/07/2011 14:30
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Dr Andreas Crivellin (ITP Bern)21/07/2011 14:30Flavour Physics and Fundamental SymmetriesParallel session talkIn this talk I review the consequences of radiative flavour violation in the MSSM. Since self-energies can be chirally enhanced and therefore of order one it is possible to generate the light-quark masses and the CKM matrix via loops. In the case of CKM generation in the down-sector constraints from b->s gamma, and in the case of CKM generation in the up-sector from epsilon_K, are observed. In...Go to contribution page
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Vladimir Chekelian21/07/2011 14:45Parallel session talkA combination of the inclusive cross sections measured by the H1 and ZEUS Collaborations in neutral and charged current deep-inelastic ep scattering at HERA is presented. The combination uses data from unpolarised ep scattering taken during the HERA-I phase as well as measurements with longitudinally polarised electron or positron beams from the HERA-II running period. The combination method...Go to contribution page
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Prof. Dhiman Chakraborty (Northern Illinois University)21/07/2011 14:45Parallel session talkWe present two searches involving final states with top quarks or with topologies similar to those observed in top quark decays. The first is a search for the pair production of a fourth generation $t'$ quark and its antiparticle, followed by their decay to a W boson and a jet, based on an integrated luminosity of 5.3 fb$^{-1}$ of $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV. The second...Go to contribution page
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Dr David Straub (Scuola Normale Superiore, Pisa)21/07/2011 14:45Flavour Physics and Fundamental SymmetriesParallel session talkRather than sticking to the full U(3)^3 approximate symmetry normally invoked in Minimal Flavour Violation, we analyze the consequences on the current flavour data of a suitably broken U(2)^3 symmetry acting on the first two generations of quarks and squarks. A definite correlation emerges between the mixing amplitudes in the K, B_d and B_s systems, which can resolve the current tension in the...Go to contribution page
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Dr Remi Louvot (EPFL, Lausanne)21/07/2011 15:00Flavour Physics and Fundamental SymmetriesParallel session talkUsing fully reconstructed $B_{s}$ mesons, we measure the branching fractions for the decays of $B_s \to D_s^{(*)+}D_s^{(*)-}$ exclusively. Assuming these decay modes saturate decays to CP-even final states, the branching fraction determines the relative width difference between the $CP$-odd and $CP$-even $B_s$ states. We study the decay $B^0_s\to J/\psi \phi$, $\phi \to K^+ K^-$. In...Go to contribution page
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Dr Panos Christakoglou (NIKHEF)21/07/2011 15:00Parallel session talkFluctuations of thermodynamic quantities are fundamental for the study of the QGP phase transition. Among the several observables calculated on an event-by-event basis, the different measures of the charge and mean transverse momentum fluctuations are of particular interest since they are considered to be indicators of the existence and of the order of this transition as well as of the...Go to contribution page
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Dr Ji Young Yu (LPSC)21/07/2011 15:00We perform a global chi^2-analysis of nuclear parton distribution functions using data from charged current neutrino-nucleus deep-inelastic scattering (DIS), charged-lepton-nucleus DIS, and the Drell-Yan (DY) process. We show that the nuclear corrections in nu-A DIS are not compatible with the predictions derived from l^+A DIS and DY data. We quantify this result using a hypothesis-testing...Go to contribution page
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Gianluca Petrillo (University of Rochester)21/07/2011 15:00We report on measurements of the top quark mass using dilepton and lepton+jet data collected with the D0 detector. These results are compared to the top mass extracted from the $t\bar{t}$ cross section using higher-order quantum chromodynamics calculations. We also present a direct measurement of the mass difference between top and antitop quarks ($\Delta m$) in lepton+jets $t\bar{t}$ final...Go to contribution page
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M. Hayk Pirumov (PI Heidelberg)21/07/2011 15:00Parallel session talkNew results on searches at HERA with the H1 Experiment are presented.Go to contribution page
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Jules Gascon (Universite de Lyon, Universite Lyon 1, CNRS/IN2P3)21/07/2011 15:00EDELWEISS is a direct search for WIMP dark matter using cryogenic heat-and-ionization germanium detectors. We report the final results of the second stage of the experiment, EDELWEISS-II, obtained with an array of ten 400 g detectors equipped with interleaved electrodes for the rejection of surface events. Limits on the elastic and inelastic cross-sections of spin-independent interactions of...Go to contribution page
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Paul Laycock21/07/2011 15:15Parallel session talkIn 2004, the H1 Collaboration at HERA installed the Very Forward Proton Spectrometer (VFPS) located at 220m from the interaction point, in the cold section of the proton ring. The spectrometer consists of two Roman Pot stations equipped with scintillating fiber detectors. The device allows the measurement of diffractive proton momentum in the range 0.009 < xpom < 0.025, where xpom is the...Go to contribution page
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Mme Cecilia Maiano (University of Milano Bicocca and INFN, Sezione di Milano-Bicocca)21/07/2011 15:15The Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment to search for neutrinoless double beta decay in Te-130 and other rare processes. CUORE is a bolometric detector composed of 988 TeO2 crystals, with the total mass of about 1 tonne. The large detector mass, low backgrounds, and the low energy threshold of a few keV make the experiment well suited for direct...Go to contribution page
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Dr Sergey Burdin (University of Liverpool)21/07/2011 15:15Flavour Physics and Fundamental SymmetriesParallel session talkWe report a new measurement of the $CP$-violating phase $\phi_s$, of the decay width difference for the two mass eigenstates $\Delta \Gamma_s$, of the mean $B^0_s$ lifetime $\overline{\tau}_s$, and of magnitudes of the decay amplitudes, from the flavor-tagged decay $B^0_s\to J/\psi \phi$. For the first time, we consider possible contributions from the decay $B^0_s \rightarrow J/\psi...Go to contribution page
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Dr Robert Pak (Brookhaven National Laboratory)21/07/2011 15:15Parallel session talkMeasurement of anisotropic particle production transverse to the beam direction, referred to as collective flow, has provided a powerful tool for characterizing ultrarelativistic heavy-ion collisions. We will present recent results on higher-order flow harmonics for different particle species at various Au+Au collision energies measured with the PHENIX experiment at the Relativistic Heavy Ion...Go to contribution page
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Lorenzo Bellagamba21/07/2011 15:15Parallel session talkVarious channels were explored to look for physics beyond the standard model. A search for first generation leptoquarks as a unique signal for new physics was augmented by searches for unnaturally large number of events in channels where the number of events predicted in the SM is small. Such a channel is the production of single top. Another such channel is the production of tau...Go to contribution page
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Guennadi Borissov21/07/2011 15:30Flavour Physics and Fundamental SymmetriesParallel session talkWe present an improved measurement of the charge asymmetry $A$ of like-sign dimuon events in 9 fb$^{-1}$ of $p\overline{p}$ collisions recorded with the D0 detector at a center-of-mass energy $\sqrt{s} = 1.96$ TeV at the Fermilab Tevatron collider. From $A$, we extract the like-sign dimuon charge asymmetry in semileptonic $b$-hadron decays. We also study the dependence of charge asymmetry...Go to contribution page
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Philippe Di Stefano (and the CDMS Collaboration) (Department of Physics, Queen's University)21/07/2011 15:30The CDMS experiment is a search for dark matter employing subkelvin germanium detectors. A dual phonon-ionization measurement allows to reject the dominant radioactive background. We present results from CDMS and progress towards SuperCDMS. We will also report the result of a joint analysis of CDMS and EDELWEISS data.Go to contribution page
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Margarete Muehlleitner21/07/2011 15:30Parallel session talkHiggs searchesGo to contribution page
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Dr Amanda Deisher (UCLA/ETH)21/07/2011 15:30We present measurements of various differential cross sections in top pair production in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV. We use data collected by the CMS experiment during the year 2011. Cross sections are measured differentially as a function of various variables. We also present a measurement of the charge asymmetry in top-pair production. In...Go to contribution page
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Prof. David d'Enterria (CERN)21/07/2011 15:30Isolated prompt photon production in proton-(anti)proton collisions proceeds mostly through quark-gluon Compton scattering [1] and has been proposed since long to directly constrain the gluon distribution in the proton. There exist 25 pT-differential measurements of isolated photon production at collider energies in the range sqrt(s)=0.2-7 TeV which are well reproduced by next-to-leading-order...Go to contribution page
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Dr Michal Sumbera (Nuclear Physics Institute ASCR)21/07/2011 15:30Parallel session talkThree-dimensional source imaging techniques in conjunction with detailed model comparisons have shown the viability of disentangling the spatio-temporal information contained in two-pion interferometric measurements from ultra-relativistic heavy ion collisions. This has led to the observation of non-Gaussian tails in the 3D pion source function and the extraction of finite pion emission...Go to contribution page
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Dresden Deepak Kar21/07/2011 15:45Using Minimum Bias data recorded in 2010, ATLAS has carried out several studies of the global properties of pp collisions at 7 TeV. A precise measurement of the total inelastic cross-section is presented in a well-defined fiducial volume, taking advantage of the precise knowledge of the luminosity available from van der Meer scans First detailed studies of diffraction cross-sections are also...Go to contribution page
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Anyes Taffard21/07/2011 15:45ATLAS searches for supersymmetry in data from the 2010 and 2011 running of the LHC will be reviewed. These searches were performed in various channels containing different lepton and jet multiplicities in the final state. Although ATLAS searches for supersymmetry in channels both with and without missing transverse momentum, this talk will concentrate on the missing transverse momentum...Go to contribution page
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M. Christian Linn21/07/2011 15:45Flavour Physics and Fundamental SymmetriesParallel session talkThe determination of the CP-violating phase $\phi_s$ in $B^0_s \rightarrow J/\psi \phi$ decays is one of the key goals of the LHCb experiment. Its value is predicted to be very small in the Standard Model but can be significantly enhanced in many models of new physics. To perform the first LHCb analysis of $\phi_s$ on 2010 data at a centre of mass energy of 7 TeV, many milestones...Go to contribution page
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Dr Anne-Isabelle ETIENVRE (CEA-DAPNIA)21/07/2011 15:45We present a measurement of the top-quark mass in proton-proton collisions at = 7 TeV with the ATLAS detector at the Large Hadron Collider. The top mass is extracted directly in the single lepton channel with template methods and indirectly from the measurement of the production cross-section.Go to contribution page
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Dr Roberto Preghenella (INFN Bologna)21/07/2011 15:45Parallel session talkThe measurement of identified charged hadron production at mid-rapidity (|y| < 0.5) performed with the ALICE experiment is resented for PbPb collisions at a nucleon-nucleon c.m. energy of 2.76 TeV. The transverse momentum spectra of charged pions, kaons, protons and antiprotons are measured from 200 MeV/c up to 3 GeV/c for pions and kaons and from 400 MeV/c up to 5 GeV/c for protons and...Go to contribution page
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M. Alexander Khodjamirian (Siegen University)21/07/2011 16:30Flavour Physics and Fundamental SymmetriesParallel session talkI will report on the QCD calculation of the hadronic matrix elements relevant for the exclusive rare $B$ decays, such as $B\to K^{(*)}\ell^+\ell^-$ and $B\to K^*\gamma$. The hadronic input for the decay observables, in addition to the heavy-light form factors, contains specific contributions, generated by the four-quark and penguin operators, such as the charm-loop effects....Go to contribution page
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Dr Yvonne Pachmayer (University of Heidelberg)21/07/2011 16:30The measurement of heavy flavour production in proton-proton collisions at the LHC allows to study the production mechanisms and to test perturbative Quantum Chromodynamics at a new energy domain. Furthermore, it will provide important reference for investigations of medium effects in Pb-Pb collisions, where charm and beauty are regarded as a good probe for parton-medium interaction dynamics....Go to contribution page
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Torsten Bringmann Bringmann (Hamburg University)21/07/2011 16:30The self-annihilation, or decay, of dark matter particles could result in significant contributions to cosmic ray fluxes of various kinds, providing a unique opportunity to detect dark matter by means other than through its gravitational interaction. A wealth of observational data, both existing and upcoming, makes these indirect detection channels ever more interesting. I review the various...Go to contribution page
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Frank Ma21/07/2011 16:30The energy loss of fast partons traversing the strongly interacting matter produced in high-energy nuclear collisions is one of the most interesting observables to probe the nature of the produced medium. The multipurpose Compact Muon Solenoid (CMS) detector is well designed to measure these hard scattering processes with its high resolution calorimeters and high precision silicon tracker....Go to contribution page
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M. Jihun Kim (Seoul National Univerity)21/07/2011 16:30Parallel session talkWe introduce a jet shape observable, N-subjettiness, that helps to discriminate the fat jet from a highly boosted color singlet particle decaying to N partons and the QCD jet. As an illustration, a toy scheme for the light Standard Model Higgs search via fully hadronic decay channels from `pp -> H W/Z' is suggested. Issues regarding the subjet definition as required by the N-subjettiness are...Go to contribution page
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M. Karolos Potamianos (Purdue University)21/07/2011 16:30We present the recent results of top-quark physics using up to 8fb-1 of ppbar collisions analyzed by the CDF collaboration. The large number of top quark events analyzed, of the order of several thousands, allows stringent checks of the Standard Model predictions. Also, the top quark is widely believed to be a window to new physics. We will present the latest measurements of top quark...Go to contribution page
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Benoit Blossier (CNRS)21/07/2011 16:45Flavour Physics and Fundamental SymmetriesParallel session talkPrecision tests of the Standard Model as well as several New Physics scenarios in the beauty flavour physics are possible, due to the large amount of experimental data already available now and to come in the future. While the theoretical uncertainty is limiting the significance of such tests, lattice QCD offers a powerful approach to compute the necessary non-perturbative hadronic...Go to contribution page
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M. Thibault Guillemin (LAPP)21/07/2011 16:45Parallel session talkWe present the result of measurements of the cross sections for the simultaneous production of two vector bosons ($WW$, $WZ$, $ZZ$) in lepton plus jets decays at a center-of-mass energy of $\sqrt{s}=1.96$ TeV using data collected with the CDF and D0 detectors at the Fermilab Tevatron. We then present the results of searches for the $WZ$ or $ZZ$ production where one ot the bosons...Go to contribution page
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Mauro Dinardo21/07/2011 16:45Measurements performed by the CMS experiment of the cross section for inclusive b-quark production in proton-proton collisions at \sqrt(s) = 7 TeV are presented. The measurements are based on different methods, such as inclusive jet measurements with secondary vertex tagging or selecting a sample of events containing jets and at least one muon, where the transverse momentum of the muon with...Go to contribution page
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Andreas Salzburger21/07/2011 17:00We present a measurement of the inclusive and dijet differential cross sections of heavy flavoured hadrons and b-jets produced in proton--proton collisions at s=7\,TeV, using data collected with the ATLAS detector. Jets are reconstructed using the anti-kt algorithm with jet radius parameter R=0.4\,. The presence of a displaced vertex from the decay of long-lived hadrons, or the presence of a...Go to contribution page
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Dr Dmitri Melikhov (HEPHY, Vienna & SINP, Moscow)21/07/2011 17:00Flavour Physics and Fundamental SymmetriesParallel session talkWe present the sum-rule extraction of the decay constants of the D, Ds, B, and Bs mesons from the two-point correlator of heavy-light pseudoscalar currents. We use the OPE of this correlator in terms of the running heavy-quark mass, for which the perturbative expansion exhibits a reasonable convergence. Our main emphasis is laid on the control over the uncertainties in the decay constants,...Go to contribution page
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Martijn Mulders (CERN)21/07/2011 17:00We present measurements of the top quark mass in proton-proton collisions at the LHC at a centre-of-mass energy of 7 TeV using data collected by the CMS experiment during the year 2011. Measurements are presented in all possible final states originating from top-pair production, and the different reconstruction methods to extract the top quark mass are discussed. Particular emphasis...Go to contribution page
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Dr Tzvetalina Stavreva (LPSC)21/07/2011 17:00Parallel session talkWe present a detailed phenomenological study of the associated production of a prompt photon and a heavy quark jet (charm or bottom) in proton-nucleus (p-A) and nucleus-nucleus (A-A) collisions. The dominant contribution to the cross-section comes from the gluon--heavy-quark (gQ) initiated subprocess, making this process very sensitive to the gluon and the heavy-quark nuclear parton densities....Go to contribution page
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Dr Marco Regis (University of Turin and INFN)21/07/2011 17:00In most of particle dark matter (DM) models, the DM candidate injects sizable fluxes of high-energy electrons and positrons through its annihilations or decays. Emitted in regions with magnetic field, they in turn give raise to a synchrotron radiation, which typically covers radio and infrared bands. We discuss the possibility of detecting signatures of Galactic and extra-galactic DM in the...Go to contribution page
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Boris Tuchming (Saclay)21/07/2011 17:00Parallel session talkWe present the result of searches for the Standard Model Higgs boson produced via the $H\to W W^{(*)}\to\ell^+\ell'^-$ ($\ell,\ell'=e,\mu,\tau$) process at a center-of-mass energy of $\sqrt{s}=1.96$ TeV with the CDF and D0 detectors at the Fermilab Tevatron collider. A Higgs particle with a mass greater than 140 GeV decays primarily into a pair of $W$-bosons and the leptonic...Go to contribution page
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Alessandro Cerri21/07/2011 17:15Flavour Physics and Fundamental SymmetriesParallel session talkThe ATLAS B physics program relies on exclusive decays, in particular involving a J/\psi. ATLAS capabilities to reconstruct the properties of D-mesons and B-hadrons in exclusive decay modes will be demonstrated and prospects for future measurements highlighted.Go to contribution page
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Dr Diego Stocco (Subatech)21/07/2011 17:15Parallel session talkThe ALICE experiment studies the properties of the QCD matter at the extreme energy densities of the ultra-relativistic heavy-ion collisions at the LHC. Produced on a very short time-scale in the initial hard-scattering processes, the heavy quarks (charm and beauty) experience the whole collision evolution: measuring the open heavy flavour spectra allows to investigate the mechanisms of...Go to contribution page
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Mlle Jelena Aleksić (IFAE)21/07/2011 17:15MAGIC is a ground-based system of two, 17 m diameter Imaging Atmospheric Cherenkov Telescopes (IACT) located in the Canary island of La Palma. MAGIC-I has been operational since 2004 and it already achieved the lowest energy threshold among the current generation of IACTs. In 2009 it was joined by MAGIC-II, and together, in the stereoscopic mode, they allow for the observations of...Go to contribution page
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Prof. Svjetlana Fajfer (Institute Jozef Stefan and Ljubljana University)21/07/2011 17:15The most general new physics effective operators in the decay of an unpolarized top quark into a bottom quark and a W gauge boson are considered at next-to-leading order in QCD. We find that the dipole operator O_{LR} contribution to the transverse-plus W helicity fraction F_+ is significantly enhanced compared to the leading order result at non-vanishing bottom quark mass. Nonetheless,...Go to contribution page
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Dr Antonio Limosani (University of Melbourne)21/07/2011 17:20Parallel session talkWe present the result of searches for the Standard Model Higgs boson at the Tevatron in channels which provide additional sensitivity in the high mass region. These include specialized searches for the $H\to W W^{(*)}\to\ell^+\ell'^-$ associated production with a $W$ or a $Z$ boson, resulting in three-leptons final states, searches for the $H\to W W^{(*)}$ decay in final states with 2...Go to contribution page
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Prof. Antoni Szczurek (Rzeszow University and Institute of Nuclear Physics PAN)21/07/2011 17:30We discuss the central exclusive production of Higgs boson and $q\bar{q}$ pairs in proton-proton (proton-antiproton) collisions at LHC and Tevatron. The amplitude for both processes is derived within the $k_t$-factorization approach and discussed in different kinematical asymptotia. In particular, we consider important high-$p_t$ and massless quark limits for $q \bar q$...Go to contribution page
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Dr Guillaume Lambard (IFIC)21/07/2011 17:30Using the ANTARES neutrino telescope, the largest neutrino telescope in the Northern hemisphere, with its first configuration with 5 lines of photodetectors to the actual nominal one corresponding to a total of 12 lines, we have studied our ability to search indirectly for an evidence of Dark Matter annihilations in heavy astrophysical objects as the Sun and the Galactic centre. First results...Go to contribution page
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Alexander Grohsjean (CEA Saclay Irfu/SPP)21/07/2011 17:30A number of results on the production and decay properties of top quark are presented. Results include a study of spin correlations in ttbar production, a search for favor changing neutral currents in top decays, a measurement of color-flow in ttbar events and a measurement of the W boson helicity.Go to contribution page
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M. Christopher Powell (Lawrence Berkeley National Laboratory)21/07/2011 17:30Parallel session talkThe production of quarkonium has been studied to provide information about the hypothesized Quark Gluon Plasma (QGP) that is expected to be created in relativistic heavy ion collisions at RHIC. Lattice QCD predicts a suppression of quarkonium production in the presence of a hot and dense medium relative to proton-proton collisions, with the suppression pattern of the various quarkonium...Go to contribution page
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M. Manuel Franco Sevilla21/07/2011 17:30Flavour Physics and Fundamental SymmetriesParallel session talkWe present recent results of studies of semileptonic B and charm decays from BABAR. In particular, we describe a recent measurement of the B-> D(*)tau nu branching fraction, and a study of Bs production and semileptonic decays using BABAR data collected above the Upsilon(4S). We also discuss the determination of |Vub| from exclusive B->pi/rho l nu and and from fully inclusive...Go to contribution page
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Prof. Stefan Dittmaier Dittmaier (University of Freiburg)21/07/2011 17:35Parallel session talkHiggs strahlung off W/Z bosons at Tevatron and the LHC, ppbar/pp -> WH/ZH, is an important process class for discovering a light Higgs boson. In the talk, first results on electroweak (and QCD) corrections for these reactions are shown that support the full differential information and the decays of the W/Z bosons, i.e. the actually considered processes are ppbar/pp -> l nu H / l l H. The...Go to contribution page
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Olena Bachynska21/07/2011 17:45Parallel session talkThe production of D*+, D0, D+, D+_s and lambda_c+ charm hadrons in ep scattering at HERA was measured with the ZEUS detector using the full HERA II data sample. The measurement has been performed in the photoproduction regime. The fractions of c quarks hadronising as a particular charm hadron, f(c-> D,lambda_c) were derived and are compared to the previous HERA results and to those obtained...Go to contribution page
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M. Livio Bianchi (INFN Torino - Universita' di Torino)21/07/2011 17:45Parallel session talkALICE is the experiment dedicated to heavy-ion studies at the LHC and, in particular, it aims at a comprehensive study of the hot and dense colour-deconfined state of matter called Quark-Gluon Plasma. Quarkonia resonances are considered as powerful probes of the deconfined phase since the heavy quark pairs pairs are produced in the early stages of the collision and their bound states are very...Go to contribution page
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Dr Fei-Fan Lee (National Chiao Tung University)21/07/2011 17:45The deployment of DeepCore array significantly lowers IceCube’s energy threshold to about 10 GeV and enhances the sensitivity of detecting neutrinos from annihilations and decays of light dark matter. To match this experimental development, we provide a complete analysis of track and cascade event rates in DeepCore array due to neutrino flux produced by annihilations and decays of galactic...Go to contribution page
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M. Alessandro Gaz21/07/2011 17:45Flavour Physics and Fundamental SymmetriesParallel session talkWe report on recent results of measurements of hadronic B decay branching fractions from BABAR. These results include B0->D(*)0h0 (where h0 is a neutral hadron), B->D(*)D(*)K, B->D(*)ppbar and B->D(*)0Ks0.Go to contribution page
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Karolos Potamianos21/07/2011 17:50Parallel session talkWe present the result of searches for a low mass Standard Model Higgs boson produced in association with a $W$ or a $Z$ boson at a center-of-mass energy of $\sqrt{s}=$1.96~TeV with the CDF and D0 detectors at the Fermilab Tevatron collider. The search is performed in events containing one or two $b$-tagged jets in association with either two leptons, or one lepton and an imbalance in...Go to contribution page
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Dr Phillip Urquijo Urquijo (University of Bonn)21/07/2011 18:00Flavour Physics and Fundamental SymmetriesParallel session talkWe report a search for $B$ decays into invisible final states. The signal is identified by fully reconstructing the accompanying $B$ meson and requiring no other charged particles and no extra energy deposited in the calorimeter. The upper limit obtained will be reported and the corresponding physics will be discussed. We report measurements of the $B \to D_{s}^{(*)} K \ell \nu$ decay...Go to contribution page
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Andreas Meyer21/07/2011 18:00Parallel session talkMeasurements of cross sections for events with charm and beauty jets in deep inelastic scattering with the H1 detector at HERA are presented. The numbers of charm and beauty jets are determined using variables reconstructed using the H1 vertex detector with which the impact parameters of the tracks to the primary vertex and the position of secondary vertices are measured. The measurements are...Go to contribution page
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Oscar Adriani (University of Florence and INFN Sez. di Firemze)21/07/2011 18:00The PAMELA satellite-borne experiment was launched from the Bajkonur cosmodrome in June 2006. The combination of a permanent magnet silicon strip spectrometer and a silicon-tungsten imaging calorimeter allows precision studies of the charged cosmic rays to be conducted over a wide energy range with high statistics. After five years of successfully operation in space, the data gathered by the...Go to contribution page
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Pamela Ferrari21/07/2011 18:00We present results on top quark decay properties using data collected in 7 TeV LHC proton-proton collisions with the ATLAS detector, including W boson polarisation in top quark decays and the search for FCNC in decays of top quarks.Go to contribution page
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Mme Catherine Silvestre (LPSC, UIC, LANL (now LPSC, work done with UIC and LANL))21/07/2011 18:00Parallel session talkCMS is fully equipped to measure hard probes in the di-muon decay channel in the high multiplicity environment of nucleus-nucleus collisions. Such probes are especially relevant for studying the quark gluon plasma since they are produced at early times and propagate through the medium, mapping its evolution. Quarkonia and bottomonia are sensitive to the evolution of the medium. In particular,...Go to contribution page
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Azeddine Kasmi21/07/2011 18:10Parallel session talkAlthough the sensitivity to a low mass Standard Model Higgs boson at the Fermilab Tevatron is highest for channels involving the $H\to b\bar{b}$ decay, other channels contribute significantly to the combined Higgs search. We report the results of searches for the Higgs boson in the diphoton final state using up to 8.5~fb$^{-1}$ of integrated luminosity collected by the CDF and D0 detectors...Go to contribution page
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Bruna Bertucci21/07/2011 18:15
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M. Mykhailo Lisovyi (DESY)21/07/2011 18:15Parallel session talkThe production of charm and beauty quarks in deep inelastic scattering has been measured with the ZEUS detector using the full HERA II data set. The charm and beauty contents in events with a jet were determined using the decay length significance and invariant mass of inclusive secondary decay vertices. Differential cross sections as functions of Q2, Bjorken x, E_T^jet and eta^jet were...Go to contribution page
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Mme Marina Artuso21/07/2011 18:15Flavour Physics and Fundamental SymmetriesParallel session talkIn a data sample corresponding to ∼36 pb−1 of pp collisions at a centre-of-mass energy sqrt(s) = 7 TeV, we make the first observation of the decay Lambda_b -> Lambda_c+Ds- and measure its branching fraction relative to that of Lambda_b -> Lambda_c+π-. We also present related measurements of B hadron decays. In a data sample corresponding to ∼36 pb−1 of pp collisions at a centre-of-mass...Go to contribution page
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767. Production of lepton, quark and meson pairs in peripheral ulrarelativistic heavy ion collisionsProf. Antoni Szczurek (Rzeszow University and Institute of Nuclear Physics PAN)21/07/2011 18:15Parallel session talkWe discuss exclusive production of lepton-antilepton, quark-antiquark, $\pi \pi$ and $\rho^0 \rho^0$ and $D \bar D$ meson pairs in ultraperipheral, ultrarelativistic heavy-ion collisions i.e. processes initiated by photon-photon fusion which could be studied at RHIC and LHC. The cross sections for exclusive muon pair production in nucleus - nucleus collisions was calculated...Go to contribution page
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Gianluca Cerminara (CERN)22/07/2011 09:00Fast and efficient methods for the calibration and the alignment of the detector are a key asset to exploit the physics potential of the CMS detector. The CMS experiment has set up a powerful framework for alignment and calibration, which is based on dedicated skims providing a highly compact dedicated input for the various workflows computing the constants. This includes a prompt...Go to contribution page
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Dr Luis Silva (LIP Lisbon)22/07/2011 09:00One of the missing keys in the present understanding of the spin structure of the nucleon is the contribution from the gluons: the so-called gluon polarisation. This quantity can be determined in DIS through the Photon-Gluon Fusion (PGF) process, in which two analysis methods may be used: (i) identifying open charm events or (ii) selecting events with high-p_T hadrons. The data used in the...Go to contribution page
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Dr Philippe Brax (CEA-Saclay)22/07/2011 09:00Parallel session talkDespite more than 10 years of intense experimental and theoretical work, no plausible explanation to the acceleration of the universe is available yet. Dark energy and modified gravity are two likely candidates. I will review their current status and state the problems that they both face. In particular, it turns out that at low energy both approaches reduce to scalar field models...Go to contribution page
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amarjit soni (BNL)22/07/2011 09:00Flavour Physics and Fundamental SymmetriesParallel session talkAdding another generation to the Standard Model is just about the simplest extension available to us; yet it has profound consequences.While there are many motivations for it, it appears now that the data from B-factories is very difficult to reconcile with the CKM-paradigm with just three families. Addition of a new family is just about the simplest way to address these difficulties. That...Go to contribution page
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Dr Tobias Kasprzik (KIT)22/07/2011 09:00Mini-review.Go to contribution page
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Christoph Englert22/07/2011 09:00Parallel session talkW/Z plus jets/multi-jetsGo to contribution page
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Ia Iashvili (SUNY Buffalo), Dr Manfred Krammer (HEPHY, Vienna)22/07/2011 09:15We present results on the jet energy calibration and jet transverse momentum resolution at CMS. In-situ measurements are performed using couple of 100/pb of proton-proton collisions at 7 TeV center of mass energy. The transverse momentum balancing in dijet and photon/Z+jet events is used to measure the jet energy response in the CMS detector, as well as the transverse momentum resolution. The...Go to contribution page
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Marco Pappagallo22/07/2011 09:15Measurements for open charm hadron production and spectroscopy at LHCb, and future prospects are presented. The LHCb detector is designed for the observation of heavy flavour decays with a fully instrumented forward coverage that is unique among the LHC experiments. These features, with the prolific charm production in sqrt(s)=7 TeV proton-proton collisions, make LHCb ideally suited to...Go to contribution page
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Dr Joel Jones-Perez (INFN - LNF)22/07/2011 09:15Flavour Physics and Fundamental SymmetriesParallel session talkThe current run of the LHC experiment shall be able to probe gluino and squark masses up to values of about 1 TeV. Assuming that hints for SUSY are found by the end of this run, we explore the flavour constraints on the parameter space of the CMSSM, with and without massive neutrinos. In particular, we focus on decays that might have been measured by the time the run is concluded, such as...Go to contribution page
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Adrian Buzatu22/07/2011 09:30Parallel session talkWe present the combination of the searches for the Standard Model Higgs boson at a center-of-mass energy of $\sqrt{s}=$1.96~TeV, using up to 8.9~fb$^{-1}$ of data collected with the CDF detector at the Fermilab Tevatron collider. The major contributing processes include associated production ($WH\to \ell\nu bb$, $ZH\to\nu\nu bb$, $ZH\to \ell\ell bb$, and $WH\to WWW^{(*)}$) and gluon...Go to contribution page
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Dr Frank Nerling (University of Freiburg)22/07/2011 09:30The COMPASS experiment at CERN SPS is dedicated to the study of hadron structure and spectroscopy. One goal of the physics programme using hadron beams is the search for new states, in particular the search for J^{PC} spin-exotic states and glueballs. Apart from a short pilot run in 2004 (190 GeV/c negative pion beam, lead target), we started our hadron spectroscopy programme in 2008 by...Go to contribution page
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Dimitri Bourilkov (University of Florida)22/07/2011 09:30Measurements of inclusive W, Z and Drell Yan production cross sections and the W lepton charge asymmetry in pp collisions at 7 TeV center-of-mass energy, based on data recorded by the CMS detector at thE LHC in 2010 and 2011 are presented. The measurements are performed in the electron and muon channels. The charge asymmetry measurements cover the central region up to 2.4 in lepton pseudo...Go to contribution page
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M. Vincent Hedberg (Lund University)22/07/2011 09:30A precision luminosity measurement is of critical importance for the ATLAS physics program, both for searches for new physics as well as for precision measurements of Standard Model cross-sections. The calibration of the luminosity is based on three so-called van der Meer scans that were performed in 2010. The calibration determines the convolved beam sizes in the vertical and horizontal...Go to contribution page
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M. Maurizio Martinelli22/07/2011 09:30Flavour Physics and Fundamental SymmetriesParallel session talkWe report recent BABAR charm physics results, including CP violation studies in D+->Ks0pi+ and D+ ->Ks0 h+h+h-, a study of the Dalitz plot of Ds+->K+K-pi+, measurements of the mass and width of the Ds1(2536)+, measurements of charm semileptonic and leptonic branching fractions, and searches for non-hadronic rare D decays.Go to contribution page
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sebastien greder (IPHC)22/07/2011 09:45Parallel session talkWe present the combination of the searches for the Standard Model Higgs boson at a center-of-mass energy of $\sqrt{s}=$1.96~TeV, using up to 8.5~fb$^{-1}$ of data collected with the D0 detector at the Fermilab Tevatron collider. The major contributing processes include associated production ($WH\to \ell\nu bb$, $ZH\to\nu\nu bb$, $ZH\to \ell\ell bb$, and $WH\to WWW^{(*)}$) and gluon fusion...Go to contribution page
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Dr Marko Staric (Jozef Stefan Institute)22/07/2011 09:45Flavour Physics and Fundamental SymmetriesParallel session talkWe report a measurement of $D^0$ - $\bar D^0$ mixing in $D^{0} \to K_S^0 \pi^{+} \pi^{-}$ decays using a time-dependent Dalitz plot analysis. We will also present an updated measurement of the mixing parameter $y_{CP}$ in decays $D^0 \to K^+K^-$ and $D^0 \to \pi^+\pi^-$. We will present a measurement to search for $CP$ violation in charged $D$ meson decays by measuring the...Go to contribution page
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Emilie Passemar (IFIC-University of Valencia)22/07/2011 09:45Recently, an important effort has been devoted at KLOE, MAMI and COSY to precisely measure the eta --> 3 pi decays. These new measurements require to revisit the theoretical analyses of these decays. In this talk, we will present a new analysis of the eta --> 3 pi decay amplitude relying on dispersive methods. We will show how the study of this decay allows to extract a fundamental parameter...Go to contribution page
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Dr Delphine Hardin (LPNHE)22/07/2011 09:45Parallel session talkWe present the recent results from the analysis of the Supernova Legacy Survey 3-years data sample. For the dark energy equation of state, assuming a flat universe, we measure a w parameter consistent with a cosmological constant with a precision of 0.2. We have paid particular attention to the systematic uncertainties. We combine the SNe data with baryon acoustic oscillation measurements...Go to contribution page
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Stanley Lai22/07/2011 09:45Tau leptons will play an important role in the physics program at the LHC. They will be used not only in searches for new phenomena like the Higgs boson or Supersymmetry and electroweak measurements but also in detector related studies like the determination of the missing transverse energy scale. Identifying hadronically decaying tau leptons requires good understanding of the...Go to contribution page
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Tara Shears22/07/2011 10:00We report on measurements of W and Z boson production, using muon final state topologies, with the LHCb experiment and using data taken at centre of mass energy of 7 TeV. Measurements of the inclusive W and Z production cross-sections, Z (W) differential cross-sections as a function of boson rapidity (muon pseudorapidity), their ratios, and the W charge asymmetry are presented and compared...Go to contribution page
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M. Matthew Charles22/07/2011 10:00Flavour Physics and Fundamental SymmetriesParallel session talkLHCb has collected a large sample of open charm events in the 2010 run. Indirect CP violation in charm is an excellent probe for new physics due to the smallness of the standard model predictions. Preliminary measurements of mixing parameters and searches for CP violation in the time-dependence of two-body charm decays are presented. The prospects of improving the sensitivity of these...Go to contribution page
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Dr Martin van Beuzekom (Nikhef)22/07/2011 10:00The status and performance of the LHCb detector during the physics LHC physics run is described. The detector has a number of notable features including: 13 micron resolution in the transverse plane on 25 track primary vertices, pion and kaon separation from 1 to 100 GeV, and 1 MHz full readout of all sub-systems. The detector is being operating above its design luminosity. The detector is...Go to contribution page
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Dr Dmitri Melikhov (HEPHY, Vienna, Austria & SINP, Moscow, Russia)22/07/2011 10:00We study the pion elastic and the pi-gamma transition form factors at large values of the momentum transfers making use of the existing experimental data and two theoretical approaches: (i) the local-duality QCD sum rules and (ii) quantum-mechanical potential models with an interaction consisting of Coulomb and confining parts in which case the ground-state form factors satisfy factorization...Go to contribution page
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Dr Fabrice Couderc (CEA/DAPNIA/SPP)22/07/2011 10:00Parallel session talkWe present searches for Higgs bosons in final states with $b$-quarks and/or taus at a center-of-mass energy of $\sqrt{s}=$1.96~TeV using up to 8.5~fb$^{-1}$ of data collected with the D0 detector. In Supersymmetric models the Higgs boson production cross section can be significantly enhanced compared to the Standard Model, and in such models the Higgs boson has a significant branching...Go to contribution page
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Dr Federico Nguyen (INFN Roma TRE), Paolo Gauzzi (Universita' degli Studi "La Sapienza" and Sezione INFN "Roma")22/07/2011 10:15The KLOE experiment has collected 2.5 fb-1 at the peak of the phi resonance at the e+e- collider DAPHNE in Frascati. The whole data set includes 100 million eta's produced through the radiative decay phi --> eta gamma and tagged by means of the monochromatic recoil photon. Measurements of eta decay channels, such as pi+ pi- gamma, are in progress. We have also measured the branching ratio of...Go to contribution page
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M. FLORENT LACROIX (UIC/FERMILAB)22/07/2011 10:15In this talk we report comprehensive results of studies of missing transverse energy (MET) measured by the CMS detector in pp collisions at a centre-of-mass energy of 7 TeV. Three MET reconstruction algorithms are deployed for various physics analyses. The scale and resolution for MET are validated using vector boson and dijet events, and severe mismeasurements due to the detector are studied....Go to contribution page
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Yuriy Onishchuk22/07/2011 10:15Flavour Physics and Fundamental SymmetriesParallel session talkThe production of the excited charm mesons D1(2420)0 and D*2(2460) in ep collisions was measured with the ZEUS detector at HERA using an integrated luminosity of 373 pb-1. The masses, widths and helicity parameters of these resonances were determined and compared with previous measurements, with theoretical expectations and with published ZEUS results of an independent sample with an...Go to contribution page
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Aruna Kumar NAYAK (LIP, Lisbon, Portugal)22/07/2011 10:15Parallel session talkWe present results from a search for an exotic Higgs Boson in the channel H++ --> l+l+ with the CMS detector using data accumulated in the 2010 & 2011 running of the LHC at sqrt s = 7 TeV. We also present results from a search for a charged Higgs Boson in ttbar decays in the channel H+ -> Tau nu with the CMS detector using data accumulated in the 2010 & 2011 running of the LHC at sqrt s = 7 TeVGo to contribution page
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Jean-Roch Vlimant22/07/2011 11:00In this presentation we will discuss the experience with the CMS computing model during the LHC runs 2010-2011. We will outline how the experiment operations has evolved during the first few months of operations. The current state of the Offline and Computing projects will be presented and we will describe the initial experience with active analysis users and real data. We will include Tier0...Go to contribution page
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Dr Jean-Loic Kneur (LCC Montpellier)22/07/2011 11:00A recent extension of a variationally optimized perturbation method, combined with renormalization group properties in a straightforward way, can provide a series of approximations to nonperturbative quantities such as the chiral symmetry breaking order parameters. We apply this to evaluate, up to the third order in this modified perturbation, the ratio F_\pi/\Lambda_MS where F_\pi is the...Go to contribution page
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Ryan Reece (University of Pennsylvania)22/07/2011 11:00Differential and inclusive cross sections for electroweak boson production are presented, in the electron, muon and tau decay channels. The data are compared to the predictions of next-to-leading-order and, where available, next-to-next-leading order QCD.Go to contribution page
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Martin Flechl22/07/2011 11:00Parallel session talkThe search for the neutral Higgs boson(s) beyond the Standard Model is presented, based on the ATLAS data collected in 2011. A wide region of the MSSM parameter space is tested via searches for Higgs decays into two tau-leptons. Additionaly, the obtained results are interpreted in terms of the exclusion limits for the Standard Model-like Higgs boson production. The experimental...Go to contribution page
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Eugeni Grauges22/07/2011 11:00Flavour Physics and Fundamental SymmetriesParallel session talkWe present recent BABAR results of searches for rare decays with new physics sensitivity. In particular, we present the results of searches for B -> gammma gamma and the lepton and baryon number violating modes B->Lambda(c)l and B->K/pi tau l. We also describe recent searches for the charm decays D-> Xl+l-, D0 -> gamma gamma and D0->l+l-.Go to contribution page
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Dr Christophe Yeche (IRFU-SPP / CEA-Saclay)22/07/2011 11:00Parallel session talkThe SDSS-III Baryon Oscillation Spectroscopic Survey (BOSS), a five-year spectroscopic survey of 10,000 deg^2, achieved first light in late 2009. One of the key goals of BOSS is to measure the signature of baryon acoustic oscillations in the distribution of Ly-alpha absorption from the spectra of a sample of ~150,000 z>2.2 quasars. Along with measuring the angular diameter distance at...Go to contribution page
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Simone Gennai (CERN/INFN)22/07/2011 11:15Parallel session talkWe present results from a search for the Higgs Boson in the channel H --> Tau Tau with the CMS detector using data accumulated in the 2010 & 2011 running of the LHC at sqrt s = 7 TeVGo to contribution page
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Dr Martha Constantinou (University of Cyprus)22/07/2011 11:15We present results on the nucleon electromagnetic/axial form factors, as well as the lower moments of the nucleon generalized parton distributions, within lattice QCD using two dynamical flavors of degenerate twisted mass fermions. Our simulations are performed on lattices with three different values of the lattice spacings, namely a=0.089 fm, a=0.070 fm and a=0.056 fm, allowing...Go to contribution page
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Mme Eleanor DOBSON (CERN)22/07/2011 11:15The ATLAS Trigger and Data Acquisition (TDAQ) system is responsible for reducing the event rate from the design bunch-crossing rate of 40 MHz to an average recording rate of 200 Hz. The ATLAS trigger is designed to select signal-like events from a large background in three levels: a first-level (L1) implemented in custom-built electronics, as well as the two levels of the high level...Go to contribution page
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Thomas Kuhr22/07/2011 11:15Flavour Physics and Fundamental SymmetriesParallel session talkWe report the latest results of a CDF search for B->mumu decays using 6.9/fb of data. Doubled statistics with respect to the previous iteration and several analysis improvement provide results that are the most sensitive from a single-experiment to date.Go to contribution page
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Dr Hengne LI (LPSC)22/07/2011 11:20We present precision measurements of the properties of W and Z bosons using D0 data. These include a measurement of W boson mass using the electron decay channel and the charged asymmetry in the muo decay channel We also present a direct measurement of the W boson width using the events with large transverse mass and the mass dependence of the forward-backward charge asymmetry in...Go to contribution page
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M. Dario Barberis (Genoa University/INFN)22/07/2011 11:30The ATLAS experiment is taking data steadily since Autumn 2009, collecting close to 1 fb-1 of data (several petabytes of raw and reconstructed data per year of data-taking). Data are calibrated, reconstructed, distributed and analysed at over 100 different sites using the World-wide LHC Computing Grid and the tools produced by the ATLAS Distributed Computing project. In addition to...Go to contribution page
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Ricardo Goncalo22/07/2011 11:30Parallel session talkThe decay of the Standard Model-like Higgs boson into bb is the dominant decay process in the region of low Higgs boson masses. The Higgs search in this channel requirese an associated heavy object, allowing for strong discrimination from the dominant multi-jet background processes. We present the status of the Higgs searches in the H->bb channel based on the ATLAS data collected so far in 2011.Go to contribution page
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Urs Langenegger (PSI)22/07/2011 11:30Flavour Physics and Fundamental SymmetriesParallel session talkThe rare decays B_{s,d}->mumu provide an excellent test of the flavor sector of the Standard Model with sensitivity to many new physics models. We report on a search for these decays with the CMS experiment using data collected until Summer 2011.Go to contribution page
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Umberto Tamponi22/07/2011 11:30We report a search for the rare hadron transitions $\Upsilon(2S) \to \eta,$ $\pi^0 \Upsilon(1S)$ from 158 million $\Upsilon(2S)$ decays collected with the Belle detector at KEK. The $\eta$'s are detected via their $\pi^0 \pi^+ \pi^-$ and $\gamma\gamma$ decay modes. The $\Upsilon(1S)$'s are detected via their exclusive decays to dileptons. A major challenge is represented by the...Go to contribution page
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Jean Wicht22/07/2011 11:45Parallel session talkWe report the observation of the $h_b(1P)$ and $h_b(1P)p$ spin-singlet bottomonium states produced in the reaction $e^+e^-\to h_b(1P)n\pi^+\pi^-$ with significances of $5.5\,\sigma$ and $11.2\,\sigma$, respectively. We find that $M[h_b(1P)]=(9898.25\pm 1.06^{+1.03}_{-1.07})\,\mathrm{MeV}/c^2$ and $M[h_b(1P)p]=(10259.76\pm0.64^{+1.43}_{-1.03})\,\mathrm{MeV}/c^2$, which correspond to...Go to contribution page
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Marumi Kado22/07/2011 11:45Parallel session talkThe search for the Standard Model-like Higgs boson decaying to two photons is one of the best ways to identify a low mass Higgs boson at LHC. The results of the search in this channel are presented, based on the ATLAS data collected in 2011 and giving sensitivity exceeding any currently reported. The detailed analysis of the background contributions is included.Go to contribution page
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Andrea Messina22/07/2011 11:45Differential and inclusive cross sections for electroweak boson production in association with jets are presented, in the electron and muon decay channels. Inclusive jet distributions, multiplicities and ratios are presented, as well as measurements of jets containing B-hadrons. The data are compared to the predictions of next-to-leading-order.Go to contribution page
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Dr sara garbolino (INFN)22/07/2011 11:45The Gigatracker (GTK) is a hybrid silicon pixel detector developed for NA62, the experiment studying ultra-rare kaon decays at the CERN SPS. Three GTK stations will provide precise momentum and angular measurements on every track of the high intensity NA62 hadron beam with a time-tagging resolution of 150 ps. Multiple scattering and hadronic interactions of beam particles in the GTK has to be...Go to contribution page
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Mme Justine Serrano22/07/2011 11:45Flavour Physics and Fundamental SymmetriesParallel session talkReview of the search for the very rare decays $B^{0}_{s} \rightarrow \mu^+ \mu^-$ and $B^{0} \rightarrow \mu^+ \mu^-$ with the LHCb experiment is presented. These decays are suppressed within the Standard Model as they can only occur via helicity suppressed loop diagrams. However, their amplitudes can be significantly different in many New Physics scenarios, especially in those with an...Go to contribution page
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Prof. Michael Drinkwater (University of Queensland)22/07/2011 11:45Parallel session talkThe WiggleZ Dark Energy Survey on the Anglo-Australian Telescope has measured redshifts for 220,000 emission line galaxies. The galaxies sample a volume of 1 cubic Gpc and a redshift range of 0.2<z<1. This is the first survey to measure the cosmology of the universe over such a wide range of epochs. Our analysis provides strong evidence that dark energy is real. In our first major...Go to contribution page
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Dr Paolo VALENTE (INFN Roma1), Riccardo Fantechi (INFN Pisa and Cern)22/07/2011 12:00The NA62 experiment at CERN aims at the very challenging task of measuring with 10% relative error the Branching Ratio of the ultrarare decay of the K+ into pi+ neutrino and antineutrino, which is expected to occur only in about 8 out of 10^11 kaon decays. This will be achieved by means of an intense hadron beam, an accurate kinematical reconstruction and a redundant veto system for...Go to contribution page
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Daniele del Re (Universita' "Sapienza" & INFN Rome)22/07/2011 12:00Parallel session talkWe present results from a search for the SM Higgs Boson in the channel H --> Gamma Gamma with the CMS detector using data accumulated in the 2010 & 2011 running of the LHC at sqrt s = 7 TeVGo to contribution page
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Dr Christoph Bobeth (TU München - IAS/Excellence Cluster Universe, Germany)22/07/2011 12:00Flavour Physics and Fundamental SymmetriesParallel session talkThe final data sets of BaBar, Belle and CDF as well as the current run of LHCb are about to significantly improve the experimental knowledge on rare $B$-decays governed by b -> s l^+l^-$. In view of this, we will present new tests of the electroweak short-distance couplings in the Standard Model and beyond, including a general set of non-standard interactions. Especially, the angular...Go to contribution page
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Mlle Monika Grothe (Univ. of Wisconsin)22/07/2011 12:05We present studies of the associated production of jets with vector bosons in pp collisions at 7-TeV center-of-mass energy at the LHC, based on data recorded by the CMS detector at the LHC in 2010 and 2011. The jet multiplicity distributions are efficiency corrected and unfolded. The studies extend to the measurement of b-jets in association with Z bosons, and of charm-jets in association with...Go to contribution page
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Dr Sébastien Descotes-Genon (LPT Orsay)22/07/2011 12:15Flavour Physics and Fundamental SymmetriesParallel session talkThe Wilson coefficient C_7 governing the radiative electromagnetic decays of B meson has been calculated to a very high accuracy in the Standard Model, but till date there is no convincing model-independent experimental bound on either the magnitude or the sign of C_7. In the present paper, we attempt at constraining both the magnitude and sign of C_7 using a systematic approach. We consider...Go to contribution page
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Elisa Guido22/07/2011 12:15We present a study of the radiative transitions from decays of the Y(2S) and Y(3S) resonances using photons that have converted into an e+e- pair, obtaining precise measurements of the branching fractions for chi_b1,2(1, 2P) --> gamma Y(1S) and chi_b1,2(2P) -->gamma Y(2S) transitions and search for radiative decay to the eta_b(1S) and eta_b(2S) states. We present a search for the...Go to contribution page
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Konstantinos Nikolopoulos22/07/2011 12:15Parallel session talkThe search for the Standard Model-like Higgs boson via its decays into two Z bosons is presented, based on the ATLAS data collected in 2011. The results obtained in the fully leptonic 'golden' decay channel cover a wide range of Higgs boson masses. Above 200 GeV, the sensitivity is highly improved using channels in which one of the Z bosons decays into neutrinos or hadrons. The good...Go to contribution page
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Dr Maurizio Bonesini (INFN Milano Bicocca)22/07/2011 12:15The International Muon Ionization Cooling Experiment (MICE) will carry out a systematic investigation of ionization cooling of a muon beam, for the future Neutrino Factory and the Muon Collider. As the emittance measurement will be done on a particle-by-particle basis, a sophisticated beam instrumentation is needed to measure both particle coordinates and timing vs RF in a harsh environment...Go to contribution page
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Elisa Guido22/07/2011 12:30We present a search for the X(3872) produced in B-->psi pi+pi- K and B-->psi pi+pi-pi0 K (psi=J/psi or psi(2S)) using 427 fb-1 of BaBar data. We present updated mass and width measurements for the Y(4260)--> J/psi pi+pi- produced in Initial State Radiation events using 454 fb-1 of data. We report the study of the B meson decays B+--> J/psi phi K+ and B0--> J/psi phi K_S, and of charged...Go to contribution page
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Dr Dominique Rebreyend (LPSC/CNRS-IN2P3/UJF)22/07/2011 12:30Parallel session talkThe GRANIT project is the follow-up of the pionnering experiments that first observed the quantum states of neutrons trapped in the earth’s gravitational field at the Institute Laue Langevin (ILL) [1]. Due to the weakness of the gravitational force, these quantum states exhibit most unusual properties: peV energies and spatial extensions of order 10 m. Whereas the first series of...Go to contribution page
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Collaboration KLOE-2 (LNF-INFN), Dr Dario Moricciani (INFN - Sez. Roma "Tor Vergata")22/07/2011 12:30The KLOE experiment at the DAFNE e+e- collider of the Frascati Laboratories of INFN is about to start a second data-taking campaign (KLOE-2). The interaction region of DAFNE has been modified using a crabbed waist scheme. The KLOE-2 scientific program aims to further improve the precision studies on kaon and low energy hadron physics, e.g. CKM unitarity and lepton universality, CPT...Go to contribution page
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Dr Hideki Miyake (KEK, Tsukuba)22/07/2011 12:30Flavour Physics and Fundamental SymmetriesParallel session talkWe present updated measurements of branching fractions, polarization, and muon forward-backward asymmetry in B-->K(*) mu mu final states using 6.7/fb of data collected by the CDF detector. A search for Lambda_b --> Lambda mu mu decays will also be shown. The results are the most sensitive from a single experiment to date.Go to contribution page
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Roberto Salerno22/07/2011 12:35Parallel session talkWe present results from a search for the SM Higgs Boson in the channels H -> ZZ -> 4l, 2l 2nu and 2l2j with the CMS detector using data accumulated in the 2010 & 2011 running of the LHC at sqrt (s) = 7 TeVGo to contribution page
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Mitesh Patel22/07/2011 12:45Flavour Physics and Fundamental SymmetriesParallel session talkThe first LHCb measurements of the decay Bd->K*mumu will be presented. In particular, the forward-backward asymmetry, fraction of K* longitudinal polarisation and partial branching fraction as a function of the di-muon invariant mass squared will be shown from 309pb-1 of the 2011 data.Go to contribution page
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Andreas Hafner22/07/2011 12:45We report on latest results obtained at BABAR studying low energy e+e- annihilations, produced via initial state radiation. Hadronic cross sections are the experimental input for calculation of the muon anomalous magnetic moment, while the study of the final states and intermediate structures with unprecedented accuracy can reveal new states and their properties. In particular, an updated...Go to contribution page
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Dr Johan Bregeon (INFN-Pisa)22/07/2011 12:45The Large Area Telescope (LAT) is the main instrument onboard the Fermi Gamma-ray Space Telescope, an orbital observatory launched in low-Earth orbit on June 11 2008 to survey the high-energy gamma-ray sky. The LAT tracker/converter serves the twofold purpose of converting the incoming gamma-ray into an electron-positron pair and tracking the latter in order to measure the original photon...Go to contribution page
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Mlle Anna Vinokurova (Budker Institute)22/07/2011 14:30Flavour Physics and Fundamental SymmetriesParallel session talkWe report results of a study of charmonium and X, Y, Z states using the world-largest data sample accumulated with the Belle detector at the KEKB asymmetric-energy e+e- collider. : We present results from a study of $X(3872) \to J/\psi \pi^+ \pi^-$ decays produced in exclusive $B\to K \pi^+ \pi^- J/\psi$ decays using the full Belle data set. We present new measurements of the...Go to contribution page
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Dr Christian Reichardt (Dept. of Physics, University of California, Berkeley)22/07/2011 14:30Parallel session talkThe South Pole Telescope (SPT) is a 10-meter telescope designed to survey the millimeter-wave sky. The telescope and its 960-element bolometric camera were successfully installed at the South Pole in 2007. Since then, the SPT has imaged 2200 square degrees of the sky with low noise and arcminute resolution. I will report on the CMB power spectrum results from SPT. In conjunction with data...Go to contribution page
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M. Yanxi ZHANG (TUHEP)22/07/2011 14:30LHCb is one of the four LHC experiments that started collecting pp collisions in 2010 at a centre-of-mass energy of 7 TeV. With its forward geometry, LHCb is dedicated to the study of heavy-flavor production and decay. The copious production of quarkonia at large rapidity is a powerful tool to study quarkonium production as well as the performance of the detector providing fundamental building...Go to contribution page
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Dr Gioacchino Ranucci (INFN)22/07/2011 14:30Borexino is a massive, calorimetric liquid scintillator detector installed at the underground Gran Sasso Laboratory. With its unprecedented radiopurity levels achieved in the core of the detection medium, it is the only real time experiment in operation able to study solar neutrino interactions in the challenging sub-MeV energy region. The recent precise measurement of the 7Be solar neutrino...Go to contribution page
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Jonas Strandberg22/07/2011 14:30Parallel session talkThe search for the Standard Model-like Higgs boson via its decays into two W bosons is presented, based on the ATLAS data collected in 2011. The search in the dilepton final state is more powerful than any public result for intermediate mass Higgs bosons and has the highest sensitivity of any of the LHC Higgs searches. It is complemented by semi-leptonic WW decays which give good...Go to contribution page
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Burkhard Schmidt22/07/2011 14:30The Letter of Intent of the LHCb upgrade has recently been submitted. Flavour physics probes beyond the energy frontier (a few TeV at the LHC), since it is sensitive to the effects of virtual quantum loop diagrams associated with particles that can be far heavier than those which can be produced directly. To exploit fully the flavour-physics potential of the LHC will require an LHCb upgrade....Go to contribution page
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Roberto Bonciani (LPSC)22/07/2011 14:30Drell-Yan production of Z and W bosons is a very important process for physics studies at hadron colliders. At the moment, the theoretical prediction includes the NNLO calculation in QCD, together with the resummation of logarithmic terms coming from soft gluon emission up to the next-to-next-to-leading logarithmic accuracy. In the talk, I will present the analytic calculation of the mixed...Go to contribution page
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M. Dmytro Kovalskyi (UCSB/CERN)22/07/2011 14:45Parallel session talkWe present results from a search for the SM Higgs Boson in the channel H -> WW -> 2l 2nu with the CMS detector using data accumulated in the 2010 & 2011 running of the LHC at sqrt s = 7 TeV. A Higgs signal in the Vector Boson Fusion channel, by exploiting the distinctive signature of the events, where the Higgs decay is accompanied by two high rapidity jets, is also presented.Go to contribution page
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Dr Tomas Brauner (Bielefeld University)22/07/2011 14:45Parallel session talkWe revisit the center-symmetric dimensionally reduced effective theory for two-color Yang-Mills theory at high temperature. This effective theory includes an order parameter for center symmetry breaking/restoration and thus allows to broaden the range of validity of the conventional three-dimensional effective theory (EQCD) to lower temperatures, towards the confining phase transition. We...Go to contribution page
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M. Bilmis Selcuk (Middle East Technical University, Ankara, Turkey)22/07/2011 14:45The ν̅e-e- elastic scattering cross-section was measured with a CsI(Tl) scintillating crystal array having a total mass of 187 kg. The detector was exposed to an average reactor neutrino flux of 6.4 × 1012 cm-2s-1 at the Kuo-Sheng Nuclear Power Station in Taiwan. The experimental design, conceptual merits,detector hardware, data analysis and background understanding of the experiment will...Go to contribution page
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Dr Evgeny Baldin (Budker Institute)22/07/2011 14:45Flavour Physics and Fundamental SymmetriesParallel session talkWe report results from the KEDR detector operating at the VEPP-4M electron-positron collider in the Budker Institute in Novosibirsk. They include: high-precision measurements of J/psi, psi' and tau lepton masses as well as determination of the main parameters of the psi(3770) resonance.Go to contribution page
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Raffaello D'Alessandro (Università di Firenze INFN-Firenze)22/07/2011 14:45CMS started a campaign to identify the future silicon sensor technology baseline for a new Tracker for the high-luminosity phase of LHC, coupled to a new effective way of providing tracking information to the experiment trigger. To this end a large variety of 6” wafers was acquired in different thickness's and technologies at HPK and new detector module designs were investigated. Detector...Go to contribution page
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Trevor Stewart (DESY)22/07/2011 14:50Measurements of the cross sections for charged current deep inelastic scattering in e+p collisions with a longitudinally polarised positron beam are presented. The measurements are based on a data sample with an integrated luminosity of 132 pb-1 collected with the ZEUS detector at HERA in 2006 and 2007 at a centre-of-mass energy of 318 GeV. The total cross section is presented at...Go to contribution page
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M. Alessandro La Rosa (University of Wisconsin)22/07/2011 15:00With the LHC collecting data at 7 TeV, plans are already advancing for a series of upgrades leading eventually to about five times the LHC design luminosity some 10 years from now in the high luminosity LHC (HI-LHC) project. The upgrades for the ATLAS detector will be staged in preparation for HI-LHC. The first upgrade for the pixel detector will be the construction of a new pixel layer...Go to contribution page
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Dr Kyle Cranmer Cranmer (New York University)22/07/2011 15:00Parallel session talkCombined ATLAS results on the Standard Model-like Higgs boson search are presented, based on the ATLAS data collected in 2010 and 2011. Several Higgs boson decay channels are combined: H->gammagamma, H->ZZ->4l, H->ZZ->llnunu, H->ZZ->llqq, H->WW->lnulnu and H->WW->lnuqq in a mass range from 110 GeV to 600 GeV. Models with a fourth generation of heavy leptons and quarks with Standard...Go to contribution page
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Fabrizio Palla22/07/2011 15:00This talk presents the J/psi and psi(2S) differential cross sections in pp collisions at 7 TeV, as a function of transverse momentum and in several rapidity ranges, on the basis of the 2010 data collected by CMS. The B to J/psi and B to psi(2S) fractions will also be presented, and compared to other measurements as well as to theory calculations.Go to contribution page
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Prof. Liaoyuan Dong (Institute of High Energy Physics, Beijing)22/07/2011 15:00Flavour Physics and Fundamental SymmetriesParallel session talkIn July 2008 the BESIII experiment in Beijing recorded the first hadronic event from e+e- collisions at the BEPCII storage ring. Since then over 100 million psi(2S) and over 200 million J/psi events, as well as a data sample corresponding to an integrated luminosity of about 2.9fb-1 at the psi(3770) resonance have been accumulated. This provides the opportunity to improve the precision on many...Go to contribution page
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Prof. Hugh Gallagher (Tufts University)22/07/2011 15:00Neutrino event generators play an important role in the design and execution of neutrino experiments. In this talk I will describe several programs that simulate neutrino-nucleus interactions in the 1-100 GeV energy regime, focussing in particular on a discussion of the underlying physics models and identifying key assumptions.Go to contribution page
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Trevor Stewart (DESY)22/07/2011 15:05The cross sections for neutral current deep inelastic scattering in e+p collisions with a longitudinally polarised positron beam have been measured using the ZEUS detector at HERA. The single-differential cross-sections dsigma/dQ^2, dsigma/dx and dsigma/dy and the double-differential cross sections in Q^2 and x are measured in the kinematic region Q^2 > 185 GeV^2 for both positively...Go to contribution page
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Christian Kiesling (Max-Planck-Institute for Physics)22/07/2011 15:15With the completion of the first-generation experiments at asymmetric $e^+ e^-$ colliders (BaBar and Belle) studying CP violation in the B-meson system, a new era of high luminosity machines is at the horizon. We report here on the plans for future experiments on CP violation and searches for physics beyond the Standard Model at the upgraded KEKB machine in Japan (``SuperKEKB''), providing an...Go to contribution page
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Dr Min-Zu Wang (NTU, Taipei)22/07/2011 15:15Flavour Physics and Fundamental SymmetriesParallel session talkWe report measurements of branching fractions and $CP$ violation asymmetries for $B\to \phi\phi K$ decays. Results of the study of $B^{\pm}\to J/\psi K^{\pm}$ and $B^{\pm}\to\eta_C K^{\pm}$, that result in a final state of five kaons, will also be presented. We study the $B^-$ meson decays to the final state of $\overline{p} \Lambda D^0$. The decay $B^-\to\overline{p} \Lambda D^{*0}$...Go to contribution page
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Dr Hagop Sazdjian (IPN, Universite Paris-Sud 11, Orsay)22/07/2011 15:15Using an exact integrodifferential equation, the spectral properties of the gauge invariant quark two-point Green's function are analyzed in two-dimensional QCD in the large N_c limit. The singularities of the Green's function arise from contributions of the colored sector of quarks (here in the fundamental representation) and give information about their spectrum. The problem is solved...Go to contribution page
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Guillaume Hurier (LPSC)22/07/2011 15:15Parallel session talkThe PLANCK mission will provide the most precise mesurement of the cosmic microwave background (CMB) anisotropies in temperature and polarization, allowing us to set tight constraints on the cosmological parameters. In addition, the PLANCK mission, because of its frequency coverage, is sensitive to the interaction of CMB photons and hot electrons in galaxy clusters via the thermal...Go to contribution page
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Eram Rizvi22/07/2011 15:20Using the deep inelastic e+p and e-p neutral and charged current scattering cross sections, including data with polarised electron beams, a combined electroweak and QCD analysis is performed to determine vector and axial-vector couplings vq and aq of light quarks u and d to the Z0 boson accounting for their correlation with parton distributions. The precision has been improved in particular...Go to contribution page
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Andrey Korytov22/07/2011 15:20Parallel session talkWe report on the combined results from several searches for the SM Higgs boson conducted by the CMS experiment with the data accumulated during the 2010 & 2011 running of the LHC at sqrt(s) = 7 TeV.Go to contribution page
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Dr Filippo Varanini (INFN Padova)22/07/2011 15:20ICARUS-T600 is the first example of an innovative detection technology, the liquid Argon TPC, which is a sort of "electronic bubble chamber", potentially scalable to huge masses. The excellent topology reconstruction, tracking and particle identification capabilities, together with the calorimetric measurement of deposited energy, make the LAr-TPC an ideal detector for the study of rare...Go to contribution page
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Dr auguste besson (Institut Pluridisciplinaire Hubert Curien)22/07/2011 15:30CMOS Pixel Sensors (CPS) are foreseen to equip vertex detectors where priority is given to granularity, material budget and power consumption, potentially at the expense of read-out speed and radiation tolerance. Being initially developed for an experiment at the ILC, the sensors came out to be well suited to Heavy Ion Collision experiments (STAR at RHIC, CBM at FAIR, ...) and...Go to contribution page
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Riccardo Brugnera22/07/2011 15:30Parallel session talkThe proton-dissociative diffractive photoproduction of J/psi mesons has been studied in ep collisions with the ZEUS detector at HERA using an integrated luminosity of 112 pb. The cross section is presented as a function of the photon-proton centre-of-mass energy and of the squared four-momentum transfer at the proton vertex. The results are compared to perturbative QCD calculations. The...Go to contribution page
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Dr Daniele Fasanella (INFN and University of Bologna)22/07/2011 15:30Flavour Physics and Fundamental SymmetriesParallel session talkA measurement of the ratio of X(3872) and \psi(2S) signal yields in pp collisions at 7 TeV is presented, using data recorded with the CMS experiment in 2010. The corresponding integrated luminosity is 36/pb. X and Psi(2S) decays are reconstructed in the final state $J/\psi \pi^+ \pi^-$, with the subsequent decay of the $J/\psi$ into two muons. The measured ratio is compared to theoretical...Go to contribution page
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Benjamin Audren (EPFL)22/07/2011 15:35Parallel session talkI will discuss the new numerical implementation in CLASS of two semi analytical methods for computing the matter power spectrum, namely the one-loop and Time Renormalization Group method. I will present our result compared against accurate N-body simulation and the halofit method on the BAO region. I will also discuss about the new implementation of the one-loop method, showing a great...Go to contribution page
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Dr DUSINI Stefano (Padova University and INFN)22/07/2011 15:35The OPERA neutrino detector built in the underground Gran Sasso Laboratory is designed to detect muon-neutrino to tau-neutrino oscillations in direct appearance mode. The hybrid apparatus consists of an emulsion/lead target complemented by electronic detectors. It is placed in the long-baseline CERN to Gran Sasso neutrino beam (CNGS) 730 km away from the source. The experimental set-up and...Go to contribution page
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Dr Matthias Schott (CERN)22/07/2011 15:40Parallel session talkIn the global fit of the Standard Model using Gfitter, electroweak precision observables as well as constraints from direct Higgs searches are compared with state-of-the-art electroweak predictions. We use the most recent results for direct Higgs searches, including updates on precision measurements such as MW and mtop from Tevatron and LHC experiments. Moreover, the Gfitter results for the...Go to contribution page
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Harris Kagan (The Ohio State University), William Trischuk (University of Toronto)22/07/2011 15:45Progress in experimental particle physics in the coming decade depends crucially upon the ability to carry out experiments at high energies and high luminosities. These two conditions imply that future experiments will take place in very high radiation areas. In order to perform these complex and perhaps expensive experiments new radiation hard technologies will have to be developed. ...Go to contribution page
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Johann Kuehn (KIT)22/07/2011 15:45We compute, for the first time, the order alpha_s^4 contribution to the singlet Adler function for the case of a genereric colour gauge group. Giving access to the terms proportional to the squared sum of the quark charges, this result completes the alpha_s^4 corrections to the familiar R-ratio as measured in electron-positron annihilation. Adopting the colour factors to the U(1)...Go to contribution page
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Dr Peter Bussey (University of Glasgow)22/07/2011 15:45Flavour Physics and Fundamental SymmetriesParallel session talkUsing 4.2 fb^-1 of data collected by the displaced track trigger, we report the observation of the Xi_b^- baryon through its hadronic decay into a Xi_0c pi- final state and a measurement of its mass. In addition, we report the results of a search for the Xi_b^0 baryon.Go to contribution page
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Dr Alexander Korzenev (Universite de Geneve, Section de physique, DPNC)22/07/2011 15:50An overview of the recent NA61/SHINE results on determination of charged kaon and pion yields in proton-carbon reactions is presented. The results aim to improve predictions of the neutrino flux in the T2K experiment. The data were recorded during the first physics run of NA61 in 2007 where a proton beam of 31 GeV/c momentum scattered off a graphite target. Thin target, 4% of a...Go to contribution page
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Dr Luigi Pilo (Department of Physics University of L'aquila)22/07/2011 16:30Parallel session talkIn GR the static gravitational potential of a self-gravitating body goes as 1/r at large distances and any slower decrease leads to infinity energy. We show that in a class of four-dimensional massive gravity theories there exists spherically symmetric solutions with finite total energy, featuring an asymptotic behavior slower than 1/r and generically of the form $r^\gamma$. This suggests that...Go to contribution page
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Ulrich Ellwanger (LPT Orsay)22/07/2011 16:30Parallel session talkWe review possible properties of Higgs bosons which are specific to the NMSSM as light CP-even scalars consistent with LEP bounds, decays into a pair of light CP-odd scalars, and enhanced branching ratios into two photons. The status of analyses to detect such unconventionally decaying Higgs bosons is descussed.Go to contribution page
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Dr Nazario Tantalo (University of Rome "Tor Vergata")22/07/2011 16:30Flavour Physics and Fundamental SymmetriesParallel session talkI will review state of the art lattice calculations of hadronic matrix elements that play a role in flavour physics (decay constants, bag parameters, form factors parametrizing semileptonic decays) both for light and heavy flavoured mesons. I will also briefly discuss how the present accuracy on some of these quantities can eventually be improved by considering effects that have been neglected...Go to contribution page
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Ursula Bassler (LPNHE-Paris)22/07/2011 16:30The diboson cross sections in the WZ,ZZ,Wgamma and Zgamma channels are measured using data collected with by the D0 experiment. The results are compared to SM predictions and constraints are set on anomolous triple gauge couplings.Go to contribution page
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Dr Anna M Holin (University College London)22/07/2011 16:30MINOS is a long baseline neutrino oscillation experiment which utilises the NuMI muon neutrino beam from Fermilab. MINOS has two detectors, a Near Detector 1km from the beam source, and a Far Detector 735km away in the Soudan mine in Minnesota. New results from MINOS will be presented and discussed.Go to contribution page
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Vasily Mochalov (IHEP,Protvino)22/07/2011 16:30PANDA is an experiment designed for the future FAIR facility at GSI to challenge our understanding of the strong interact ion and of hadronic matter. Exploiting the high luminosity and good quality of the cooled antiproton beam, PANDA will search for new forms of matter, namely for precise measurements of possible exotic states, such as glueballs, hybrids, pentaquarks etc. in the quark...Go to contribution page
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Amanda Cooper-Sarkar22/07/2011 16:30Parallel session talkThis talk will present a summary of QCD fits of H1 and ZEUS data to determine improved PDFs. The QCD fit analysis of the combined HERA-I inclusive deep inelastic cross sections has been extended to include combined HERA II measurements at high Q2. The precision of the PDFs at high-x is considerably improved - particularly in the valence sector. A preliminary NNLO QCD analysis is presented...Go to contribution page
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M. Mikhail Danilov (ITEP-Moscow)22/07/2011 16:45The CALICE collaboration has developed highly granular calorimeter prototypes to evaluate technologies for experiments at a future lepton collider, and evaluated their performance in test beams. One important use of these data is the validation of the physics models in GEANT4, especially those related to hadronic showers. This validation is crucial if Monte Carlo simulations are to...Go to contribution page
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Alberto Lusiani22/07/2011 16:45Parallel session talkWe present the results of direct searches for light new physics with BABAR. In particular, we describe studies of narrow Upsilon and B decays with sensitivity to possible light pseudoscalar Higgs bosons and invisibly decaying dark matter candidates. We also present results of searches for hidden sector gauge and Higgs bosons.Go to contribution page
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Dr Osamu Seto (Hokka-Gakuen University)22/07/2011 16:50We show that in a class of two Higgs doublet model, where one Higgs doublet generates masses of quarks and charged leptons whereas the other Higgs doublet with a tiny vacuum expectation value generates neutrino Dirac masses, large Yukawa couplings lead to a large enough CP asymmetry of the right-handed neutrino decay. Thermal leptogenesis suitably works at low energy scale as keeping no...Go to contribution page
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Dr Claudio Giganti (IFAE Barcelona)22/07/2011 16:50The T2K (Tokai to Kamioka) experiment is a long baseline neutrino oscillation experiment designed to probe the θ13 neutrino mixing parameter by looking for the appearance of νe in an almost pure νμ beam. The concurrent measurement of νμ disappearance allows refined measurements of the atmospheric Δm2 and of the θ23 mixing parameters. A neutrino beam is produced at the Japan Proton Accelerator...Go to contribution page
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Dr Joachim Brod (Excellence Cluster Universe, TU Munich)22/07/2011 16:50Flavour Physics and Fundamental SymmetriesParallel session talkNeutral Kaon mixing plays an important role in the phenomenology of the standard model and its extensions because of its sensitivity to high-energy scales. In this talk I will give a summary of the theory prediction of epsilon_K and Delta M_K and present our new NNLO QCD calculation of the charm-quark contribution eta_cc to the Delta S = 2 effective Hamiltonian.Go to contribution page
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M. Lei Xia (Argonne)22/07/2011 17:00For several years, CALICE has been testing highly granular calorimeter prototypes using analogue readout. These devices are envisaged for particle flow application in a future linear collider detector. A novel alternative, especially interesting for the hadron calorimeter, is to use digital readout, with a very small cell size. In the past year the first large scale (1m³) digital...Go to contribution page
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Mlle Jennifer Bowles (University of Glasgow)22/07/2011 17:00Parallel session talkThe HERMES experiment at DESY, Hamburg used the HERA 27.6GeV electron/positron polarised beam to study the structure of the nucleon. Deeply Virtual Compton Scattering (DVCS) provides access to Generalised Parton Distributions via measured azimuthal asymmetries at HERMES. Data was collected from 1995 to 2007 with unpolarised and both longitudinally and transversely polarised gas targets (H, D...Go to contribution page
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Jamal Rorie22/07/2011 17:00Parallel session talkWe search for a CP-odd light Higgs among 102 M $\Upsilon(1S)$ events recorded with the Belle detector at KEKB. Our signal mode is $\Upsilon(1S)\to\gamma A_0;A_0\to \tau^+\tau^-$, where the $\tau$ is detected via its leptonic decay modes. We determine the upper limits on the production rates for a CP-odd light Higgs with a mass between the $\tau^+\tau^-$ threshold and 9.4...Go to contribution page
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Matthieu MARIONNEAU (SPP-IRFU CEA/Saclay)22/07/2011 17:00We present studies of diboson production in pp collisions at 7 TeV center-of-mass energy based on data recorded by the CMS detector at the LHC in 2010 and 2011. These include precise measurements of W and Z production in association with a photon and of WW production, as well as possible first observations of WZ and ZZ productions at the LHC. The results are interpreted in terms of constraints...Go to contribution page
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Dr Evgueni Goudzovski (University of Birmingham)22/07/2011 17:05Flavour Physics and Fundamental SymmetriesParallel session talkThe results from the CERN kaon experiments are presented. A precision test of lepton universality by measurement of the helicity suppressed ratio of kaon leptonic decay rates BR(K --> e nu)/BR(K --> mu nu) has been performed with over 10^5 K+- --> e+- nu decays collected by the NA62 experiment in 2007-08. A record accuracy of 0.4% has been achieved, which constrains the parameter space of new...Go to contribution page
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Aurélien Barrau (LPSC)22/07/2011 17:10Parallel session talkLoop Quantum Gravity is a very attractive attempt to perform a non-perturbative and background-independant quantization of general relativity. Applied to the Universe as a whole, the resulting framework, Loop Quantum Cosmology (LQC) has led to several important results beginning by the fact that the Big Bang singularity is resolved and replaced by a Big Bounce. In this talk, I will focus on...Go to contribution page
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Dr bernard Pire (cpht polytechnique)22/07/2011 17:15Exclusive hard reactions have seen much recent progress, both theoretically and experimentally. I shall first review some new results on the Transition distribution amplitudes (TDAs) which appear in the QCD factorized amplitude of some "backward" exclusive processes (ref : Phys.Rev. D82, 094030,2010 and papers in preparation). I will also show new results on NLO QCD corrections for timelike...Go to contribution page
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Dr Francesco Lacava (Dep. Physics University "Sapienza - Roma / INFN - Roma)22/07/2011 17:15The energy resolution of the hadronic calorimeters is determined by fluctuations in the development of the shower. In non compensating calorimeters the dominant contribution comes from the fluctuation of the electromagnetic shower fraction. The dual readout technique proposed by DREAM aims to correct event by event for the fluctuations of the e.m. component measuring at the same time...Go to contribution page
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Michele Papucci22/07/2011 17:15Parallel session talkSUSY SearchesGo to contribution page
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Mme Caterina Bloise, Collaboration KLOE-2 (LNF-INFN)22/07/2011 17:20Flavour Physics and Fundamental SymmetriesParallel session talkA phi-factory offers the possibility to select pure kaon beams: neutral kaons from phi → KSKL are in fact produced in pairs and the detection of a KS (KL) tags the presence of a KL (KS), the same holds for charged kaons. This allows to perform precise measurement of kaon properties. The KLOE experiment has measured most decay branching ratios of K_S, K_L amd K^+- mesons providing the basis...Go to contribution page
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Prof. Michele Maltoni (Instituto de Fisica Teorica UAM/CSIC)22/07/2011 17:20We present an up-to-date global analysis of solar, atmospheric, reactor and accelerator neutrino data in the framework of three-neutrino oscillations, discussing in detail the statistical significance of the observed "hint" of non-zero theta_13 and determining the presently allowed ranges of masses and mixing. We then turn to models with one or two sterile neutrinos and present...Go to contribution page
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Dr Ivanka Bozovic-Jelisavcic (VINCA Institute of Nuclear Sciences)22/07/2011 17:30[On behalf of the FCAL Collaboration] Detectors at future e+e- collider need special calorimeters in the very forward region for a fast estimate and precise measurement of the luminosity, to improve the hermeticity and mask the central tracking detectors from back-scattered particles. Using Monte Carlo simulations, designs optimized for the ILC and CLIC colliders are presented. Sensor...Go to contribution page
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Song-Ming Wang22/07/2011 17:30Measurements are presented of high energy photons produced in association with W and Z bosons in pp collisions at √s = 7 TeV using the ATLAS detector. The analysis uses W and Z bosons selected with leptonic (e/µ) decays. Subsets of these events are identified by demanding an electromagnetic object passing isolated photon selection criteria. We isolate signals of p + p → l + ν + γ + X and...Go to contribution page
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Mlle alexia gorecki (LPSC)22/07/2011 17:30The Large Synoptic Survey Telescope (LSST) system will produce a 6-band wide and deep field astronomical survey of over 20,000 square degrees of the southern sky using an 8.4-meter ground-based telescope. Each patch of sky will be visited about 1000 times in ten years. Its camera will be the world largest one, with 3200 Megapixels. It will cover a huge 9.6 square degree field of view, and...Go to contribution page
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Lorenzo Ortolan22/07/2011 17:30Inclusive Z-boson plus jets cross sections are measured in a final state where the Z-boson has decayed in two muons or electrons. Results are based on $\sim 6$ fb$ ^{-1}$ of data in $\rm p\bar{p}$ collisions at $\rm \sqrt{s}$ = 1.96 TeV collected with the CDF detector in Run II. Differential cross sections are presented as a function of several variables, among which jet transverse momentum,...Go to contribution page
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Dr Jennifer Girrbach (TU Munich)22/07/2011 17:35Flavour Physics and Fundamental SymmetriesParallel session talkIn a supersymmetric grand-unified model proposed by Chang, Masiero and Murayama the atmospheric neutrino mixing angle induces large new b --> s transitions. Relating the supersymmetric low-energy parameters to seven new parameters a_0, m_0^2, m_{\tilde g}, D, xi, tan(beta) and arg(mu) of this SO(10) GUT model, we perform a correlated study of several FCNC processes. The LEP limit on the ...Go to contribution page
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Prof. Stefan Antusch (Basel University)22/07/2011 17:40What is the origin of the observed fermion masses and mixing parameters? Neutrinos, with their small mass and large mixing, contribute an important part of this flavour puzzle. Could they possibly also provide the key towards its solution? We review the present status and discuss some recent developments regarding the flavour puzzle, from the neutrino physics perspective.Go to contribution page
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Alexander Oh22/07/2011 17:45Measurements of the diboson cross sections in the WW,WZ,and ZZ channels are presented. The data are compared to SM predictions and constraints are set on anomolous triple gauge couplings.Go to contribution page
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Eric KAJFASZ (CPPM)22/07/2011 17:45Parallel session talkWe present the result of various searches for the production of supersymmetric particles in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV using data collected by the CDF and D0 detectors at the Fermilab Tevatron Collider and corresponding to integrated luminosities of up to 6 fb$^{-1}$. We present results for the searches for the pair production of stop squark and searches for the...Go to contribution page
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Georgios Tsipolitis (National Technical University of Athens)22/07/2011 17:45The luminosity upgrade of the Large Hadron Collider at CERN (sLHC) foresees a luminosity increase by a factor five compared to the LHC. To cope with the corresponding increase in background rates, the Muon System of the ATLAS experiment at CERN will likely need major changes in the very forward/backward regions. The Muon ATLAS MicroMegas Activity (MAMMA) is focused on the development and...Go to contribution page
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M. Raoul Rontsch (University of Oxford)22/07/2011 17:45The process W^+W^- + dijet is of great importance at the LHC, not only in itself but also as a primary background to moderately heavy Higgs production in association with two jets. I present next-to-leading order results for this process calculated recently using unitarity methods. By looking at specific kinematic distributions, I will show how the reduced theoretical uncertainty can improve...Go to contribution page
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M. Valentin Niess (LPC, Clermont)22/07/2011 17:50Flavour Physics and Fundamental SymmetriesParallel session talkWe present updated results for the CKM matrix elements from a global fit to Flavour Physics data within the Standard Model theoretical context. We describe some current discrepancies, established or advocated, between the available observables. These discrepancies are further examined in the light of New Physics scenarii.Go to contribution page
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Ignacio Sevilla (CIEMAT, Madrid)22/07/2011 17:50Parallel session talkThe Dark Energy Survey will employ a powerful instrument, the Dark Energy Camera, and a state-of-the-art data management system on the improved Blanco 4-meter telescope at CTIO to probe the nature of dark energy and the cause of cosmic acceleration. The instrument includes a 520-Megapixel optical imager with red-sensitive CCDs covering a 3 square degree field of view and an active alignment...Go to contribution page
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M. Salvatore Alessandro Tupputi (Politecnico di Bari and INFN Sezione di Bari)22/07/2011 18:00The RPC muon system of the CMS detector at the CERN LHC remains uninstrumented in the pseudorapidity region 1.6<|eta|<2.4. An ongoing project aims at covering the region of the muon endcaps with large-area triple- GEM detectors whose features are suited to enhance muon tracking and preserve triggering capabilities for the CMS detector upgrade. The design and assembling of small (10cm×10cm) and...Go to contribution page
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Prof. Mark Adams (University of Illinois at Chicago)22/07/2011 18:00Parallel session talkWe report the result of searches for final states with 2 vector bosons, either two photons or one photon plus one $Z$, in association with large missing transverse energy produced in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV. The data were collected with the D0 detector at the Fermilab Tevatron Collider and correspond to up to 6.3 fb$^{-1}$ of integrated luminosity. The observed...Go to contribution page
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Dr Akin Wingerter (LPSC)22/07/2011 18:00Current experimental data on the neutrino parameters is in good agreement with tribimaximal mixing and may indicate the presence of an underlying family symmetry. For 76 flavor groups, we perform a systematic scan for models: The particle content is that of the Standard Model plus up to three flavon fields, and the effective Lagrangian contains all terms of mass dimension <=6. We find...Go to contribution page
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Massimiliano Bellomo22/07/2011 18:00Cross sections, both inclusive and differential, and ratios of cross sections for W and Z boson production in proton-proton collisions are presented. The measurements are compared to the predictions of precise QCD calculations using and range of PDF fits. The impact of these measurments on evvnt generators, future fits and their uncertainties is studied.Go to contribution page
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Dr Giovanni Ossola (New York City College of Technology - CUNY)22/07/2011 18:05There are several solutions on the market for the automated computation of multi-particle scattering amplitudes at the one-loop level. In this presentation I will review the results obtained in the past year and describe the main features of the Golem/Samurai approach, that employs a d-dimensional extension of the OPP reduction method, in combination with an automated generation of...Go to contribution page
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Dr Marcella Bona (Queen Mary, University of London)22/07/2011 18:05Flavour Physics and Fundamental SymmetriesParallel session talkWe present the summer 2011 update of the Unitarity Triangle (UT) analysis performed by the UTfit Collaboration within the Standard Model (SM) and beyond. Within the SM, combining the direct measurements on sides and angles, the UT is over-constrained allowing for the most accurate SM predictions and for investigation on the tensions due to the most recent updates from experiments and...Go to contribution page
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nicolas Chotard (Institut de physique nucléaire de Lyon)22/07/2011 18:10Parallel session talkType Ia supernovae (SNe~Ia) are used as standard candles to measure the history of the universe expansion. However, precise measurements need an empirical standardization of the luminosities usually done with two light-curve derived parameters (stretch and color): brighter SNe~Ia exhibit a broader light curve, and redder objects are fainter. Employing the flux calibrated spectra sample...Go to contribution page
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Christian Grefe (CERN)22/07/2011 18:15The expected results from the LHC experiments will give us an idea of the physics at the TeV scale. A lepton-collider at these energies will then be required to complement the information from the LHC, and to fully understand the physics. The Compact Linear Collider (CLIC) with a center of mas energy of up to 3 TeV is a suitable concept for such a future e^{+}-e^{-}-linear-collider. The...Go to contribution page
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MasterCode Collaboration (MasterCode), Samuel Rogerson (Imperial College London)22/07/2011 18:15Parallel session talkWe present the latest results of the MasterCode collaboration on global SUSY fits. Currently available experimental data are used to determine the preferred SUSY and Higgs boson mass scales. The data comprise a combination of high-energy SUSY searches, low-energy precision measurements and astrophysical data. We include all relevant LHC searches for SUSY, electroweak precision...Go to contribution page
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M. Bjoern Penning (University of Freiburg)22/07/2011 18:15We present measurements of inclusive W/Z + n jet cross sections (n=1-4), presented as total inclusive cross sections and differentially in the $n^{th}$ jet transverse momentum and rapidity, as well as the heavy flavor content in these jets up to n=2. The measurements are made using 4.2 to 6 fb$^{-1}$ of data collected by the D0 detector at the Fermilab Tevatron Collider. The measurements are...Go to contribution page
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M. Cristoforo Simonetto (TU Munich)22/07/2011 18:15In this talk I will consider an extension of the Standard Model by heavy right-handed neutrinos and a second Higgs doublet. In the decoupling limit of the extra particles, this model provides an explanation for the small neutrino masses and for the mild hierarchy observed between the atmospheric and solar mass splittings without jeopardizing any of the successes of the Standard Model. Finally...Go to contribution page
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Stapnes Steinar (CERN)23/07/2011 09:00The compact linear collider study (CLIC) is aiming at delivering a conceptual design for a multi-TeV linear electron-positron collider in 2011. This concept is based on high gradient normal-conducting accelerating structures. The RF power for the acceleration of the colliding beams is produced by a novel two beams acceleration scheme, where power is extracted from a high current drive beam...Go to contribution page
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M. Johannes Bergström (Royal Intstitute of Technology)23/07/2011 09:00We investigate numerically how accurately one could constrain the strengths of different short-range contributions to neutrinoless double beta decay in effective field theory. Depending on the outcome of near-future experiments yielding information on the neutrino masses, the corresponding bounds or estimates can be stronger or weaker. A particularly interesting case, resulting in strong...Go to contribution page
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Dr Tatyana Dimova (Budker Institute of Nuclear Physics, Novosibirsk, Russia)23/07/2011 09:00The results of the first data taking run in the 1-2 GeV range with SND detector at VEPP-2000 e+e- collider are presented. The reported data are based on the integrated luminosity of 5.5pb^{-1}. The preliminary results on multihadron cross sections, e.g., e+e->\pi^+\pi^-\pi^0, 2\pi^0\gamma, \pi^+\pi^-\pi^0\pi^0 are obtained. The future program is discussed.Go to contribution page
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Brock Tweedie23/07/2011 09:00Parallel session talkHiggs/Top taggingGo to contribution page
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Elias Kiritsis (UoC and APC)23/07/2011 09:00Parallel session talkWe propose holographic models based on Einstein-dilaton gravity with a potential in 5 dimensions. Such theories, for a judicious choice of potential are very close to the physics of large-N YM theory both at zero and finite temperature. The zero temperature glueball spectra as well as their finite temperature thermodynamic functions compare well with lattice data. The model can be used to...Go to contribution page
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Nicolas Pierre Chanon23/07/2011 09:00A measurement of the differential cross section for the inclusive production of isolated prompt photons in proton-proton collisions at a center-of-mass energy sqrt(s)=7 TeV is presented. The data sample corresponds to an integrated luminosity of 36/pb recorded by the CMS detector at the LHC. Photons are required to have a pseudorapidity |η|<2.5 and ET>25 GeV. Photon candidates are identified...Go to contribution page
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Dr Alberto Garfagnini (Universita' di Padova e INFN)23/07/2011 09:15Observation of 0nbb would determine an absolute mass scale for neutrinos, prove that neutrinos are massive Majorana particles (indistinguishable from their own antiparticles), and constitute physics beyond the Standard Model. There are several experiments based on cryogenic crystals that try to find evidence on this reaction. A review of the current state of the field and the plans for the...Go to contribution page
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Dr Simon Eidelman (Budker Institute)23/07/2011 09:15The CMD-3 detector at the VEPP-2000 electron-positron collider in the Budker Institute in Novosibirsk collected about 20/pb in the center-of-mass energy range from 1 to 2 GeV during the first year of operation. First results on the hadronic cross sections are reported important for improving the precision of the theoretical predictions for the muon anomalous magnetic moment.Go to contribution page
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Francesco Polci23/07/2011 09:15Measurements of the cross section for the inclusive production of isolated prompt photons, photons produced in association with jets and diphotons in pp collisions at a centre-of-mass energy sqrt(s) = 7TeV are presented. Photon candidates are identified by combining information from the calorimeters and from the inner tracker. Residual background in the selected sample is estimated from data...Go to contribution page
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Peter Bussey23/07/2011 09:30Parallel session talkIsolated photon production in deep inelastic ep scattering has been measured with the ZEUS detector at HERA using an integrated luminosity of 320pb-1. Measurements were made in the isolated-photon transverse-energy and pseudorapidity ranges 4 < ET < 15 GeV and -0.7 < eta < 0.9 for exchanged photon virtualities, Q2, in the range 10 < Q2 < 350 GeV and for invariant masses of the hadronic...Go to contribution page
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Lucio Rossi (CERN)23/07/2011 09:30In the last year CERN has organized a project, called High Luminosity LHC, regrouping all studies and hardware development needed to improve the luminosity performance of LHC by a factor five above its design (nominal) value, namely reaching 5·1034 cm-2 s-1 with luminosity leveling. This performance, which should be reached after 2021, will enable to obtain some 250 fb-1 per year of...Go to contribution page
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M. Nils-Erik Bomark (University of Bergen)23/07/2011 09:30Parallel session talkAdding trilinear R-parity violating terms to a supersymmetric scenario, has large implications for collider phenomenology. We show that a large fraction of parameter space yields a scenario reminiscent of the standard MSSM but where the neutralino instead of escaping the detector, decays to standard model particles. This would give rise to spectacular multi-lepton and/or multi-jet...Go to contribution page
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Dr Michal Heller (Universiteit van Amsterdam / Institute for Nuclear Studies)23/07/2011 09:30Parallel session talkWe report on the evolution of boost-invariant N=4 super Yang-Mills plasma covering a large range of proper times starting from various nonequilibrium states at tau=0, through a transition to a hydrodynamic regime and following subsequent hydrodynamic expansion. The results are obtained through numerical solution of Einstein's equations for the dual geometries. Despite the very rich far from...Go to contribution page
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Dr Graziano Venanzoni (INFN - Laboratori Nazionali di Frascati)23/07/2011 09:30The KLOE experiment at the $\phi$ factory DA$\Phi$NE in Frascati (near Rome) is the first to have employed Initial State Radiation (ISR) to precisely determine the $e^+e^-\to\pi^+\pi^-(\gamma)$ cross section below 1 GeV. Such a measurement is particularly important to test the Standard Model calculation for the (g-2) of the muon, where a long standing 3$\sigma$ discrepancy is...Go to contribution page
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Dr Mike Marino (TU Munich)23/07/2011 09:35Observation of 0nbb would determine an absolute mass scale for neutrinos, prove that neutrinos are massive Majorana particles (indistinguishable from their own antiparticles), and constitute physics beyond the Standard Model. There are several experiments based on liquid detector technology that try to find evidence for this reaction. A review of the current state of the field and the plans...Go to contribution page
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Dr Costas Vellidis (Fermilab)23/07/2011 09:45We report a measurement of the cross section of prompt isolated photon pair production in ppbar collisions at a total CM energy of 1.96 TeV using data of 5.4/fb integrated luminosity collected with the CDF II detector at the Fermilab Tevatron. The measured differential cross section is compared with three perturbative QCD predictions, a Leading Order (LO) parton shower Monte Carlo and...Go to contribution page
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Dr Ayan Mukhopadhyay (LPTHE, University of Paris VI, France)23/07/2011 09:45Parallel session talkWe argue, using inputs from both field theory and gravity, that all non-equilibrium phenomena holographically dual to solutions of pure gravity, are determined completely by a closed set of equations of motion of the energy-momentum tensor. These phenomenological equations include energy-momentum conservation, but additional equations for evolution of the shear-stress tensor also. A class of...Go to contribution page
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Paul Jackson23/07/2011 09:45Parallel session talkR-parity violation in supersymmetry gives rise to many unique experimental signatures. We describe searches with the ATLAS detector for supersymmetry with R-parity violation. Examples include searches for sneutrino decay to electron plus muon, and displaced vertices from the late decays of heavy objects. The most recent results on these channels will be given based on data recorded in 2010 and 2011.Go to contribution page
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M. Sebastian Fischer (For the KATRIN Collaboration - Karlsruhe Institute of Technology)23/07/2011 09:55The KATRIN experiment is the next generation tritium beta decay experiment which aims for a direct, model-independent measurement of the electron neutrino mass with 200 meV/c^2 sensitivity (90% C.L.). This corresponds to an improvement of the sensitivity by one order of magnitude in comparison to current results of tritium beta decay neutrino mass experiments. KATRIN uses a high-luminosity...Go to contribution page
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Prof. Nikolay SKACHKOV (Joint Institute for Nuclear Research)23/07/2011 10:00Samples of inclusive $\gamma+{\rm 2~jet}$ and $\gamma+{\rm 3~jet}$ events collected by the D0 experiment with an integrated luminosity of about 1~fb$^{-1}$ in $p\bar{p}$ collisions at $\sqrt{s}=1.96$ TeV are used to measure cross sections as a function of the angle in the plane transverse to the beam direction between the transverse momentum ($p_T$) of the $\gamma+$leading jet system...Go to contribution page
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Prof. Jan Kalinowski (University of Warsaw)23/07/2011 10:00Parallel session talkThe Higgs sector of the $R$-symmetric supersymmetric model includes two iso-doublets R_{d,u} in addition to the standard iso-doublets H_{d,u}. Masses and interactions of these novel states are analysed and their decay modes and production channels at the LHC and e+e- colliders are calculated.Go to contribution page
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Dr Kyo Shibata (High Energy Accelerator Research Organization (KEK))23/07/2011 10:00SuperKEKB, which is an upgrade of KEKB B-factory (KEKB), is a next-generation high luminosity electron-positron collider with asymmetric energies of 7 GeV (e-) and 4 GeV (e+). Its predecessor, KEKB, was operated from 1998 to 2010 and had been a leader in the race to provide the world’s highest luminosity since 2001. It delivered a total integrated luminosity more than 1 /ab to Belle detector...Go to contribution page
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Dr Frank Saueressig (Institut für Physik, Johannes Gutenberg Universität Mainz)23/07/2011 10:00Parallel session talkWeinberg's asymptotic safety scenario proposes that gravity constitutes a consistent and predictive Quantum Field Theory within Wilson’s generalized framework of renormalization. The key ingredient in the construction is a non-trivial fixed point of the gravitational renormalization group flow which controls the UV behavior of the theory and renders it safe from unphysical divergences. This...Go to contribution page
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Prof. Alessandro Strumia (Pisa University and INFN)23/07/2011 10:10Assuming that the new particles introduced by type-I, type-II, type-III see-saw in order to mediate neutrino masses are below a TeV, we describe their resulting manifestations at LHC.Go to contribution page
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Erik Brucken23/07/2011 10:15We present the first observation and cross section measurement of exclusive photon pair production in proton-antiproton collisions at center-of-mass energy of 1.96 TeV using data taken by the Run II Collider Detector at Fermilab. We select events with two electromagnetic showers, each with transverse energy ET greater than 2.5 GeV and pseudorapidity, $\rm |\eta|$ < 1.0, with no other...Go to contribution page
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Dr Amine Benhenni (LCC Montpellier)23/07/2011 10:15Parallel session talkWe consider no-scale supergravity inspired scenarios, with emphasize on the possible dynamical determination of the gravitino mass and connected soft supersymmetry-breaking parameters, through radiative corrections to an essentially flat tree-level potential in the hidden sector. We (re)emphasize the important role played by the scale-dependent vacuum energy contribution to the...Go to contribution page
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Dr Andres Collinucci (LMU, Munich)23/07/2011 11:00Parallel session talkF-theory was developed in the mid-nineties as a tool to study IIB string theory beyond its perturbative regime. Although conceptually less understood than its "spouse", M-theory, F-theory is a more practical tool for model building mainly because it is anchored to algebraic geometry. This well-studied field of mathematics facilitates spectacularly detailed calculations and provides for endless...Go to contribution page
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Hannes Jung23/07/2011 11:00Parallel session talkWe present measurements of the forward (3 < |eta| < 5) energy flow in minimum bias events and in events with either hard jets or W and Z bosons produced at central rapidities, as well as measurements of the inclusive forward jet cross section and of associated production of forward and central jets. The dijet "k-factor", defined as the ratio of the inclusive to the exclusive dijet cross...Go to contribution page
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Deborah Harris (Fermilab)23/07/2011 11:00he MINERvA detector, operating since 2009 in the NuMI beam line at Fermilab, has collected neutrino and antineutrino scattering data on a variety of nuclear targets. The detector is designed to identify events originating in plastic scintillator, lead, carbon, iron, water, and liquid helium. The goals of the experiment are to measure precisely inclusive and exclusive cross sections for...Go to contribution page
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Dr John Jowett (CERN)23/07/2011 11:00The first heavy-ion run of the LHC in 2010 opened up a new energy frontier in nucleus-nucleus collisions. An immediate harvest of physics results demonstrated the potential of the collider and its three heavy-ion experiments, ALICE, ATLAS and CMS. The plan for the coming decade foresees not only increasing energy and luminosity of the primary Pb-Pb collisions but also hybrid p-Pb and Ar-Ar...Go to contribution page
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Iacopo Vivarelli23/07/2011 11:00Parallel session talkThe most sensitive channels to Supersymmetry in proton-proton collisions are composed of jet(s) and missing transverse momentum final states (with and without b-jets). The most recent results on these channels will be given based on data recorded in 2011Go to contribution page
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Dr Susanne Westhoff (Mainz University)23/07/2011 11:00A theory review of the forward-backward anomaly observed in top-quark pair production at the Tevatron is presented. I discuss various attempts to explain the large forward-backward asymmetry by physics beyond the Standard Model model. Significants constraints arise from flavour and electroweak precision observables, as well as direct production of new particles at hadron colliders. A large...Go to contribution page
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Jonathan Jason Hollar23/07/2011 11:15Parallel session talkA measurement of the total, inelastic pp cross section at 7 TeV, based on the observation of pile-up events, is presented. Measurements of soft and hard diffractive processes obtained with the CMS detector at various centre-of-mass energies are presented and compared with the PYTHIA6, PHOJET and PYTHIA8 Monte Carlo generators. The ratio of diffractive to inclusive jet production is obtained...Go to contribution page
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Dr Thierry Lasserre (Saclay)23/07/2011 11:15Recently new reactor antineutrino spectra have been provided for 235U, 239Pu, 241Pu and 238U, increasing the mean flux by about 3 percent. We will review the synthesis of published experiments at reactor-detector distances <100 m leading to a ratio of observed event rate to predicted rate of 0.943(0.023), deviating from unity at the 98.6% C.L.. The compatibility of this new result with the...Go to contribution page
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M. Christian Autermann (Hamburg University)23/07/2011 11:20Parallel session talkWe present the results of searches for Supersymmetry in all-hadronic final states with jets and missing transverse energy, including the cases of jets identified as b-jets, the decay products of top quarks and hadronically decaying tau leptons. The searches are performed using data collected by the CMS experiment at the LHC in pp-collisions at a center-of-mass energy of 7 TeV. Various...Go to contribution page
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M. Oliver Bruening (CERN)23/07/2011 11:25An overview is presented on the design concepts for a high luminosity electron-nucleon collider (LHeC) of 1.3 TeV centre of mass energy, which can be realized with the addition of a 60 GeV electron ring or linear accelerator to the existing proton and ion LHC beam facility. The LHeC design comprises machine magnets, optics, interaction region, cryogenics, RF, civil engineering and further...Go to contribution page
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Prof. Bozzo Marco (INFN Genova)23/07/2011 11:30The TOTEM experiment at the LHC, placed symmetrically with respect to the CMS Interaction Point IP5, is optimized to measure in dedicated special-optics runs, luminosity independently, the total pp cross-section and to study elastic pp scattering over a wide range in momentum transfer from -t ~ 10 -3 to 10 GeV2. Furthermore, diffractive dissociation, including single, double and central...Go to contribution page
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Costas Vellidis23/07/2011 11:30In elementary particle physics, symmetry is fundamental to the theories we use to describe the world in which we live. A discrepancy in a symmetry predicted by the standard model can perhaps point to new types of physics, to an anomaly in the data, or it can demonstrate that current theories need revision. Since 2006, scientists at CDF and D0 have been studying the forward backward asymmetry...Go to contribution page
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Dr Eran Palti (Ecole Polytechnique)23/07/2011 11:30Parallel session talkWe study proton decay in Grand Unified Models based on F-theory. We calculate the coupling of the heavy Higgs triplet modes to the light quark generations. This coupling plays an essential part in dimension 5 proton decay and we show that it is very different from the associated Yukawa coupling.Go to contribution page
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Dr Emiliano Molinaro (CFTP - IST)23/07/2011 11:40We study a type I see-saw scenario where the right-handed (RH) neutrinos, responsible for the light neutrino mass generation, lie at the electroweak scale. Under certain conditions, the strength of the charged (CC) and neutral current (NC) weak interactions of the Standard Model particles with the heavy RH neutrinos can be large enough to allow the production of the latter at the LHC, opening...Go to contribution page
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Alessandro Broggio (Johannes Gutenberg Universität)23/07/2011 11:40Parallel session talkWe use a recent approach to threshold soft gluon resummation, based on effective field theory, to quantify the dynamical enhancement of the partonic threshold region for Drell-Yan and slepton pair production in supersymmetry. We evaluate the resummed invariant mass distribution and total cross section at the NNLL order, and match the result onto NLO fixed order calculation.Go to contribution page
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Thomas Ruf23/07/2011 11:45Parallel session talkThe phase space coverage of the LHCb detector allows a unique insight into the particle production in the forward region at the LHC. Due to its unique pseudorapidity coverage and the possibility of extending the measurements to low transverse momenta, the LHCb data provide important input to the understanding of particle production in a kinematical range where QCD models have large...Go to contribution page
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Dr Michele Cicoli (DESY, Hamburg)23/07/2011 11:45Parallel session talkWe present examples of string compactifications with an anisotropic shape of the extra dimensions which are very promising to make contact with current experiments since they allow the existence of micron-sized extra dimensions, TeV scale strings and hidden Abelian gauge bosons with a kinetic mixing with the ordinary photon.Go to contribution page
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Ilias Efthymiopoulos (CERN)23/07/2011 11:50An outline of the present and future long-baseline neutrino facilities with emphasis on the possibilities at CERN is presented. Accelerator-made neutrinos for long baseline oscillation experiments open the exploration to a broad and rather interesting field of physics experiments, with the measurement of the neutrino mixing angle (θ13), the determination of the sign of neutrino mass hierarchy...Go to contribution page
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Regina DEMINA23/07/2011 11:50We present measurements of the integrated forward-backward charge asymmetry in $t\bar{t}$ production in $p\bar{p}$ collisions using data collected with the D0 detector at the Fermilab Tevatron collider, using both the lepton+jets and dilepton final states. We present the raw measurement as well as results obtained after correcting for acceptance and detector effects and present also...Go to contribution page
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Dr Francois-Xavier Josse-Michaux (CFTP,IST)23/07/2011 11:55We present a UV-completion of the Inverse-Seesaw model for the Neutrino masses, where 3 right-handed Neutrinos and one extra Higgs doublet are added to the Standard Model. Through the addition of two extra scalar fields, the model provides a natural mechanism for the generation at of the Baryon Asymmetry of the Universe and for thermal Dark Matter. A Global U(1) spontaneously broken explains...Go to contribution page
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Helen Hayward23/07/2011 11:55Parallel session talkChannels with one or several leptons or photons and high missing transverse momentum (and potentially high pT jets or b-jets) are a natural place to search for supersymmetry at the LHC. The most recent results on these channels will be given based on data recorded in 2011Go to contribution page
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Dieter Luest (Max-Planck-Institut fuer Physik, Ludwig-Maximilians-Universitaet)23/07/2011 12:00Parallel session talkIn this talk I will discuss possible stringy signatures at hadron colliders. I will concentrate on D-brane models with a low string scale in the TeV region. The production of string resonances in di-jet events as well as leptophobic Z'-gauge bosons will be discussed. Also some more formal aspects of low string scale compactifications in connection with black holes will be mentioned at the end.Go to contribution page
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Dr Martin Hentschinski (IFT-UAM Madrid)23/07/2011 12:00We present a definition of an unintegrated seaquark density for the LO CCFM Monte-Carlo CASCADE and discuss determination of a NLO BFKL unintegrated gluon density from a fit to combined HERA data. The kT-dependent sea-quark density is defined using high energy factorization, while the quark-gluon splitting is treated with exact kinematics. The latter is found to agree with the...Go to contribution page
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Andre Rubbia (ETH Zurich)23/07/2011 12:10The talk will summarise the current status and potential of future long baseline experiments.Go to contribution page
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Nejc Kosnik23/07/2011 12:10The experimental results on the $t \bar t$ production cross section at the Tevatron are well described by the QCD contributions within the standard model, while the recent measurement of the forward-backward asymmetry cannot be accounted for within this framework. This discrepancy can be explained by an exchange of a colored weak singlet scalar in the $u$-channel. Such state $\Delta$ couples...Go to contribution page
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Sanjay Padhi (University of California, San Diego)23/07/2011 12:15Parallel session talkWe present the results of searches for Supersymmetry in various topologies that lead to final states with jets and missing transverse momentum together with one or more isolated leptons, one or two photons or a photon and a lepton. The searches are performed using data collected by the CMS experiment at the LHC in pp-collisions at a center-of-mass energy of 7 TeV. Various data-driven...Go to contribution page
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Dr Samuel Wallon (LPT Orsay and UPMC university)23/07/2011 12:15We present the first next-to-leading BFKL study of the cross section and azimuthal decorrellation of Mueller Navelet jets. This includes both next-to-leading corrections to the Green's function and next-to-leading corrections to the Mueller Navelet vertices. The obtained results for standard observables proposed for studies of Mueller Navelet jets show that both sources of corrections are of...Go to contribution page
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Prof. Gail Hanson (University of California, Riverside)23/07/2011 12:15A muon accelerator facility that leads to a multi-TeV Muon Collider presents the unique opportunity to explore new physics within a number of distinct programs that can be brought online as the facility evolves. An introduction to the Muon Collider facility and its capabilities will be given. The Muon Accelerator Program, hosted by Fermilab, has recently been approved by the U.S. Department of...Go to contribution page
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Dr elena wildner (cern)23/07/2011 12:30The recent discovery of neutrino oscillations, has implications for the Standard Model of particle physics (SM). Knowing the contribution of neutrinos to the SM, needs precise measurements of the parameters governing the neutrino oscillations. The EUROν Design Study will review three facilities (the so-called Super-Beams, Beta Beams and Neutrino Factories) and perform a cost assessment that,...Go to contribution page
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Richard Polifka23/07/2011 12:30Parallel session talkThe cross section for the diffractive deep-inelastic scattering process ep -> e X p is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data are compared to perturbative QCD predictions at next-to-leading order based on diffractive parton distribution functions previously extracted from complementary measurements of inclusive diffractive...Go to contribution page
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Gabriele Honecker (Universitaet Mainz)23/07/2011 12:30Parallel session talkFractional D6-branes on toroidal orbifold backgrounds are known to be able to accommodate the particle spectrum and gauge group of the Standard Model, but up to now exact results for their low-energy effective action are missing. In this talk, I will discuss how the conceptual ansatz for the field theory on the torus is generalised to those orbifold backgrounds on which the Standard Model...Go to contribution page
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Andreas Weiler23/07/2011 12:35Parallel session talkFlavour/LHC interplayGo to contribution page
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Dr Adam Dobbs (Imperial College London)23/07/2011 12:40The muon ionization cooling experiment (MICE) is a strategic R&D project intending to demonstrate the only practical solution to prepare high brilliance beams necessary for a neutrino factory or muon colliders. MICE is under development at the Rutherford Appleton Laboratory (UK). It comprises a dedicated beam line to generate a range of input emittance and momentum, with time-of-flight and...Go to contribution page
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Dr Paul Soler (University of Glasgow)23/07/2011 12:45We illustrate that the baseline Neutrino Factory configuration being developed within the International Design Study for the Neutrino Factory (the IDS-NF) is optimized for standard oscillation-physics measurements and for searches for new physics. For small values of θ13 (sin22θ13 < 10-2) a Neutrino Factory with two storage rings in which 25 GeV muons decay, pointing to two neutrino...Go to contribution page
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Dr Cezar Condeescu (CPHT - Ecole Polytechnique)23/07/2011 12:45Parallel session talkWe investigate the transmutation of D-branes into Abelian magnetic backgrounds on the world-volume of higher-dimensional branes, within the framework of global models with compact internal space. The phenomenon, T-dual to brane recombination in the intersecting-brane picture, shares some similarities to small-instanton transitions in non-compact space, though in this case the Abelian magnetic...Go to contribution page
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Paul Laycock23/07/2011 12:45The Large Hadron electron Collider (LHeC) is a proposed facility which will exploit the new world of energy and intensity offered by the LHC for electron-proton scattering, through the addition of a new electron accelerator. This contribution, which is derived from the draft CERN-ECFA-NuPECC Conceptual Design report (due for release in 2011), addresses the expected impact of the LHeC precision...Go to contribution page
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Prof. Fabio ZWIRNER (Univ. and INFN, Padova)23/07/2011 14:30ECFA plenary
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Steinar Stapnes (CERN)23/07/2011 14:40ECFA plenary
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Tatsuya Nakada (EPFL Lausanne)23/07/2011 14:55ECFA plenary
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Marcello Giorgi (Univ. di Pisa & INFN Pisa)23/07/2011 15:05ECFA plenary
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23/07/2011 15:15ECFA plenary
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Guido Altarelli (Roma Tre Univ.)23/07/2011 15:25ECFA plenary
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23/07/2011 15:45ECFA plenary
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Steve Myers (CERN)23/07/2011 16:05ECFA plenary
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23/07/2011 16:25ECFA plenary
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Pippa Wells (CERN)23/07/2011 17:15ECFA plenary
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23/07/2011 17:35ECFA plenary
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David Wark (Rutherford Appleton Laboratory)23/07/2011 17:55ECFA plenary
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Francis Halzen (Univ. Wisconsin–Madison)23/07/2011 18:15ECFA plenary
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23/07/2011 18:30ECFA plenary
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23/07/2011 18:40ECFA plenary
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25/07/2011 09:00Plenary talk
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25/07/2011 09:20
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25/07/2011 09:55Plenary talk
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25/07/2011 10:20
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George Smoot (LBNL & UC Berkeley & Univ. Paris 7)25/07/2011 10:30Plenary talk
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Arnaud Duperrin (CPPM-Marseille)25/07/2011 11:30Plenary talk
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Guido Tonelli (INFN & Univ. Pisa)25/07/2011 12:00Plenary talk
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Dave Charlton (Univ. Birmingham)25/07/2011 12:30Plenary talk
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Giulia Zanderighi (Oxford Univ.)25/07/2011 15:00Plenary talk
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Juan Alcaraz (CIEMAT-Madrid)25/07/2011 15:30Plenary talk
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Frederic Deliot (CEA - Saclay)25/07/2011 16:00Plenary talk
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Lance Dixon (CERN & SLAC)25/07/2011 17:00Plenary talk
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Federico Antinori (INFN - Padova)25/07/2011 17:30Plenary talk
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Carlos Salgado (Univ. Santiago de Compostela)25/07/2011 18:00Plenary talk
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Yoichiro Suzuki (Kamioka Obs. & IPMU Tokyo)26/07/2011 09:00Plenary talk
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Lars Bergstrom (Univ. Stockholm)26/07/2011 09:30Plenary talk
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Igor Tkachev (INR-Moscow)26/07/2011 10:00Plenary talk
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Teresa Montaruli (Univ. Wisconsin & INFN & Univ. Bari)26/07/2011 11:00Plenary talk
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Julien Lesgourgues (LAPTh - Annecy & CERN & LPHE Lausanne)26/07/2011 11:30Plenary talk
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Marek Kowalski (Univ. Bonn)26/07/2011 12:00Plenary talk
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Roland Horisberger (PSI-Villingen)26/07/2011 14:30Plenary talk
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Steve Myers (CERN)26/07/2011 15:00Plenary talk
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Tor Raubenheimer (SLAC)26/07/2011 15:30Plenary talk
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Niklas Beisert (AEI Potsdam)26/07/2011 16:30Plenary talk
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Koichiro Nishikawa (KEK)26/07/2011 17:00Plenary talk
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Stefan Schoenert (TU München)26/07/2011 17:30Plenary talk
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Nikos Varelas (Univ. Illinois)27/07/2011 09:00Plenary talk
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Guy Wilkinson (Oxford Univ.)27/07/2011 09:30Plenary talk
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Diego Tonelli (Fermilab)27/07/2011 10:00Plenary talk
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Matthias Neubert (Univ. Mainz)27/07/2011 11:00Plenary talk
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Peter Krizan (Ljubljana Univ. & Stefan Inst.)27/07/2011 11:30Plenary talk
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Toshinori Mori (ICEPP Univ. Tokyo)27/07/2011 12:00Plenary talk
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Slava Rychkov (LPTENS & Univ. Paris-6)27/07/2011 14:30Plenary talk
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Eric James (Fermilab)27/07/2011 15:00Plenary talk
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William Murray (RAL)27/07/2011 15:30Plenary talk
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Pier Oddone (Fermilab)27/07/2011 16:30Plenary talk
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Atsuko Suzuki (KEK)27/07/2011 16:55Plenary talk
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Rolf Heuer (CERN)27/07/2011 17:20Plenary talk
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David Gross (KITP Santa Barbara)27/07/2011 17:45Plenary talk
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27/07/2011 18:10Plenary talk
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Mme Stefania bordoni (LPNHE-Universites Paris 6-Paris 7)Top and Electroweak PhysicsPosterThis poster presents measurements of the inclusive differential cross-section of electron production in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV. From a data sample of 1.4 pb−1 collected by the ATLAS detector at the Large Hadron Collider, the electron cross-section measurement is presented as a function of transverse momentum, pT , in the range 7 < pT < 26 GeV and...Go to contribution page
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428. A light-front coupled-cluster method for the nonperturbative solution of quantum field theoriesProf. John Hiller (University of Minnesota Duluth)PosterWe propose a new nonperturbative method that is based on a light-front Hamiltonian approach and the exponential-operator techniques of the many-body, coupled-cluster method. The mass eigenstates of the field theory are written as infinite expansions in Fock space but approximated by the exponentiation of an operator acting on a projection onto the lowest Fock sector. The full eigenvalue...Go to contribution page
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Dr Marcos Dracos (IPHC Strasbourg)AcceleratorsPosterIn the framework of the EUROnu design study, we have developed a new design for the CERN to Fréjus neutrino beam based on the proposed linear accelerator SPL. The aim of this beam is to study CP violation in the neutrino sector, with a proton beam of 4.5 GeV/c, a baseline of 130 km and the water Cherenkov MEMPHYS (440 kton fiducial mass) as the far detector. The main challenge of this...Go to contribution page
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Dr Paul Soler (University of Glasgow)AcceleratorsPosterThe Neutrino Factory produces high-energy neutrino beams with a well-defined flavour content and energy spectrum from the decay of intense, high-energy, stored muon beams. The muon storage rings include long straight sections that are directed toward neutrino detectors that are sited several thousand kilometers away. This talk describes the status of the accelerator facility described in the...Go to contribution page
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Mlle Louise Skinnari (UC Berkeley / LBNL)Detector R & D and data handlingPosterATLAS is a multipurpose experiment that records the products of the LHC collisions. In order to reconstruct trajectories of charged particle produced in these collisions, ATLAS is equipped with a tracking system built using two different technologies, silicon planar sensors (pixel and microstrips) and drift-tube based detectors. Together they constitute the ATLAS Inner Detector, which is...Go to contribution page
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Jonathan Dumas (LPSC)AcceleratorsPosterRecently, the nuclear and high-energy physics communities have shown a growing interest in the availability of high current, highly-polarized positron beams. The Polarized Electrons for Polarized Positrons (PEPPo) experiment planned at the Jefferson Lab (JLab) aims to measure the transfer of polarization from a low energy (< 10 MeV) highly spin polarized electron beam to positrons. A...Go to contribution page
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Meriem Hadjer LAGRAA (Laboratoire de Physique Théorique d'Oran (LPTO), Université d'Oran Es-Sénia.)PosterInspiring by the Holst case, the Palatini (Palatini-Holst) action was generalized by adding term of real function depending on the Torsion which has no effects on the obtained evolution equations which are the classical vacuum Einstein equations (M. Dubois-Violette and M. Lagraa Lett. Math. Phys, 91 83, 2010). Through this poster, we shall expose an analysis of these new actions which shows...Go to contribution page
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Mlle Jiyeon Han (University of Rochester)Top and Electroweak PhysicsParallel session talkWe report on the measurement of angular coefficients and the forward and backward asymmetry (Afb) of Drell-Yan dilepton pairs from $p\bar{p}$ collisions at $\sqrt{s}$ = 1.96 TeV. The data sample is collected by the CDF II detector. The angular distributions are studied as a function of the transverse momentum of dilepton pair and Afb is measured using the event weighting technique. The...Go to contribution page
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M. Nicolas Arnaud (in2p3-LAL)Detector R & D and data handlingPosterCharged particle identification (PID) is a key input for the physics program of the SuperB experiment. In the barrel region, the main detector for K/$\pi$ separation will be the 'Focusing Detector of Internally Reflected Cherenkov light' (FDIRC), the successor of the successful BaBar DIRC, which camera has been completely re-designed. In addition, R&D is ongoing to add a detector on the...Go to contribution page
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Dr Wolfgang Lucha (Austrian Academy of Sciences)QCDPosterThe decay constants of the heavy pseudoscalar mesons D and D_s are revisited within a recently developed novel approach to dispersive QCD sum rules relying on an unprejudiced implementation of quark–hadron duality. The proposed modifications of standard sum-rule techniques are assessed by applying our prescriptions to quantum mechanics, where exact solutions may be easily found by simply...Go to contribution page
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Guillaume Toucas (Laboratoire de Physique Théorique d'Orsay)Flavour Physics and Fundamental SymmetriesPosterDue to the intermediate position of the strange quark in the hierarchy of quark masses, a numerical competition may arise in chiral series between leading (LO) and next-to-leading order (NLO) in three-flavour Chiral Perturbation Theory (ChPT), as it was suggested by several studies performing a chiral extrapolation of Nf=2+1 lattice data. A way to study this question is to use a modified...Go to contribution page
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Dr Valeriy Dvoeglazov (Universidad de Zacatecas)QCDPosterTrace theorems for the S=1 Barut-Muzinich-Williams matrices are considered. The formulas of the relativistic scalar product \gamma_{\mu\alpha}\ldots \gamma_{\beta\mu}, etc., are found. They are analogs of the well-known Chisholm-Caianiello-Fubini identities. The obtained results could be useful in the higher-order calculations of the high-energy processes with S=1 and S=0 particles...Go to contribution page
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Mme Marta RuspaQCDPosterA combination is presented of inclusive diffractive cross section measurements made by the H1 and ZEUS collaborations at HERA. Correlations of systematic uncertainties are taken into account by the combination method, resulting in improved precision.Go to contribution page
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Nicolas BOUSSON (Centre de Physique des Particules de Marseille)PosterThe ability to identify jets containing b-hadrons is important for the high-pT physics program of a general-purpose experiment at the LHC such as ATLAS. Two robust b-tagging algorithms taking advantage of the impact parameter of tracks or reconstructing secondary vertices have been swiftly commissioned and used for several analyses of the 2010 data: bottom and top quark production...Go to contribution page
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M. Marco Schreck (Institut für Theoretische Physik, Karlsruhe Institute of Technology (KIT))PosterLorentz symmetry is one of the fundamental cornerstones on which the Standard Model of elementary particle physics is based. However, toy models of physics at the Planck scale, such as space time foams, lead to Lorentz symmetry breaking. In the low energy limit such a violation of Lorentz invariance can be described in the framework of an effective quantum field theory. Background fields are...Go to contribution page
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Riccardo Maria Bianchi (CERN)Detector R & D and data handlingPosterThe ATLAS experiment at the Large Hadron Collider at CERN relies on a complex and highly distributed Trigger and Data Acquisition (TDAQ) system to gather and select particle collision data at unprecedented energy and rates. The control and configuration (CC) system is responsible for all the software required to configure and control the ATLAS data taking. This ranges from high level...Go to contribution page
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Dr Tomas Brauner (Bielefeld University)Flavour Physics and Fundamental SymmetriesPosterGenerating sufficient amount of CP violation that would account for the observed matter-antimatter asymmetry in the universe is a long-standing problem in particle physics. It is a common lore that new physics beyond the Standard Model is needed for this purpose. This claim is based on earlier perturbative estimates of effective CP violation in the bosonic sector of the Standard Model induced...Go to contribution page
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Dr Robert Kaminski (Institute of Nuclear Physics Polish Academy of Sciences)QCDPosterRecently presented new-one subtracted dispersion relations with imposed crossing symmetry condition for the pi-pi S - and P -wave scattering amplitudes and the well known Roy's equations with two subtractions have led to a set of many partial wave amplitudes in very wide energy range [1]. They allow for. e.g. a very precise and unambiguous determination of scattering lengths and ...Go to contribution page
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Ingo Schienbein (LPSC)QCDPosterWe calculate transverse momentum ($p_T$) distributions for the inclusive hadroproduction at next-to-leading order in the general-mass variable-flavor-number scheme. We present results for the ATLAS, CMS, LHCb and ALICE experiments and compare with first data.Go to contribution page
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Roger Barlow (Huddersfield University)AcceleratorsPosterMeasurement of delta, the CP violating phase in the neutrino mixing matrix, is a crucial next step in our understanding of the universe. It appears as a +- sin(delta) term in the expression for the rate of oscillation from muon to electron neutrinos: CP violation makes the rate for nu_mu to nu_e transitions different from nu_mu bar to nu_e bar. However delta can be determined by measuring...Go to contribution page
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Mlle Katja Klein (RWTH Aachen University)Detector R & D and data handlingPosterThe CMS experiment foresees upgrades of its silicon pixel and strip detectors for the luminosity upgrade of the LHC. Due to an increase in the number of readout channels and higher complexity larger currents will have to be provided to the detector. Since cable channels are hardly accessible and space for cables is limited, this would lead to excessively large resistive power losses in the...Go to contribution page
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Dr Oliver Grimm (ETH Zurich)Detector R & D and data handlingPosterA camera for ground-based based Cherenkov astronomy using Geiger-mode Avalanche Photodiodes (GAPD) was developed within the FACT project (First G-APD Cherenkov Telescope). Its essential design components are solid light concentrators to make full use of the large angular acceptance of G-APDs and camera-integated digitizaton and trigger electronics. Data transfer from the camera to the counting...Go to contribution page
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Dr Paul Soler (University of Glasgow)Detector R & D and data handlingPosterStudies carried out in the framework of the International Design Study for the Neutrino Factory (the IDS-NF) show that the sensitivity to the CP violating phase and the last unknown mixing angle θ13 is maximised when two far detectors optimized to detect the sub-leading νe to νμ oscillation are combined. Several technologies are being discussed for these detectors: magnetised iron...Go to contribution page
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Martin Zdrahal (IPNP, Faculty of Mathematics and Physics, Charles University in Prague)Flavour Physics and Fundamental SymmetriesPosterA natural method for the precise determination of the $m_d-m_u$ mass difference, which is still beyond the reach of direct lattice simulations, is a comparison of a measured value of some quark-mass dependent observable with its chiral perturbation theory prediction. The most promising processes for such study seem to be eta->3pi decays. Unfortunately, achieving this goal is complicated by...Go to contribution page
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M. George Iakovidis (NTUA)Detector R & D and data handlingPosterThe luminosity upgrade of the Large Hadron Collider at CERN (sLHC) foresees a luminosity increase by a factor five compared to the LHC. To cope with the corresponding increase in background rates, the Muon System of the ATLAS experiment at CERN will need major changes in the high rapidity region. The Muon ATLAS MicroMegas Activity (MAMMA) focuses on the development and testing of large-area...Go to contribution page
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Prof. Dhiman Chakraborty (Northern Illinois University)Detector R & D and data handlingPosterScintillator tiles directly coupled to photo-sensors (without wavelength shifting fiber) offer greatly simplified construction for highly granular detectors. The performance of these detectors requires uniform response across the surface of the scintillator. Flat and shaped scintillator tiles directly coupled to silicon photo-multipliers have been investigated with both a radioactive source...Go to contribution page
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M. Timothée Theveneaux-Pelzer (LPNHE/IN2P3/CNRS)Top and Electroweak PhysicsPosterThe understanding of the reconstruction of electrons in the ATLAS experiment at LHC is one of the key issues for the run at a center of mass energy of 7 TeV and is of particular importance in any analysis with isolated electrons in final state. We describe the measurements performed using tag-and-probe techniques to establish reference electron efficiencies at low transverse energies based on...Go to contribution page
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Prof. Paul Newman (for the LHeC study group) (University of Birmingham)PosterThe Large Hadron electron Collider (LHeC) is a proposed facility which will exploit the LHC heavy ion beam for electron-nucleus scattering, using a new electron accelerator. This contribution, which is derived from the draft CERN-ECFA-NuPECC Conceptual Design report (due for release in 2011), addresses the expected physics impact of the LHeC for heavy ion physics. The kinematic coverage at low...Go to contribution page
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Dr Masaya Kohda (National Taiwan University, Taiwan)PosterWe address the electroweak baryogenesis based on the standard model with a fourth generation. The conventional three-generation standard model (SM3) fails to explain the baryon asymmetry of the universe, although it can satisfy all three Sakharov’s conditions in principle. One of the reasons of this failure is the insufficiency of the CP violation from the Kobayashi-Maskawa phase. An existence...Go to contribution page
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Dr Oliver Grimm (ETH Zurich)Detector R & D and data handlingPosterExperiments integrating several hardware and software components require, except for the simplest cases, a control system. Comprehensive control system frameworks exist, for example EPICS, DOOCS or the commercial PVS-II. For a small scale application, these systems are however often too complicated and need professional support for their installation and maintenance. This presentation gives an...Go to contribution page
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Dorota Sokolowska (University of Warsaw)PosterInert Doublet Model is a minimal extension of the Standard Model with the second scalar doublet that may provide a Dark Matter candidate. We consider possible evolutions of the Universe to this state during cooling down of the Universe after inflation, taking into account first order of the temperature corrections to the potential. We argue that in the past Universe could pass through phase...Go to contribution page
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Tara ShearsQCDPosterWe report on studies of exclusive dimuon production using LHCb experimental data. Exclusively produced muon pairs can be produced by two photon fusion (a QED process ideally suited to obtaining a precise integrated luminosity measure), or through resonances produced by pomeron-photon fusion or double pomeron exchange.We present cross-section measurements for exclusive dimuon production, and...Go to contribution page
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Mme Halina AbramowiczQCDPosterTwo pion exclusive electroproduction at HERA has been studied with the ZEUS detector using 82 pb-1 of integrated luminosity collected during 1998-2000. The analysis was carried out in the kinematic range of photon virtuality 2 < Q2 < 80 GeV2, gamma*p center-of-mass energy 40 < W < 180 GeV and two-pion invariant mass 0.4 < M(pipi) < 2.5 GeV. The pi+pi-invariant-mass distribution...Go to contribution page
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Dr Antonio Uras (IPNL Lyon)Detector R & D and data handlingPosterALICE is the experiment dedicated to the study of the quark gluon plasma in heavy-ion collisions at the LHC. Improvement of ALICE sub-detectors for the upgrade plans of the year 2017 are ongoing. The Muon Forward Tracker (MFT) is a proposal in view of this upgrade. The MFT is a silicon pixels detector added in the Muon Spectrometer acceptance ($−4 < \eta < −2.5$) upstream of the hadronic...Go to contribution page
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M. Guido Magazzu Magazzu (University of California Santa Barbara (UCSB) / INFN-Pisa)Detector R & D and data handlingPosterIn future High Energy Physics experiments severe power and radiation hardness requirements and non-homogeneous latency and bandwidth constraints in data transfers from Front-End electronics to remote trigger processors and readout systems will push toward “standard” and flexible protocols and modular architectures. The use of IP-cores available to ASIC and FPGA designers will contribute to...Go to contribution page
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Sarah LivermoreQCDPosterWe present new results on the commissioning of the tools in ATLAS data for mapping the substructure of hadronic jets and for distinguishing the signatures of new boosted massive particles from the QCD background. Techniques to utilize jets as more than simply surrogates for individual short distance partons allow for detailed comparisons of QCD predictions for jet mass and parton shower...Go to contribution page
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Dr Harleen Dahiya (Dr. B.R. Ambedkar National Institute of Technology)QCDPosterThe chiral constituent quark model ($\chi$CQM) is known to provide a satisfactory explanation of the proton spin and related issues in the nonperturbative regime. It has been extended to understand the effects of nonperturbatively generated ``quark sea'' to determine the flavor structure of the octet baryons. In particular, we have calculated the sea quark distribution functions, quark sea...Go to contribution page
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Krzysztof Piotrzkowski (UCLouvain)Detector R & D and data handlingPosterDevelopment of GasToF, a picosecond resolution Cherenkov gas detector using the fastest single anode MCP-PMTs, is reviewed including its various design options. New results obtained from measurements at the CERN test-beams in August and September 2010 are presented. In particular, the measured timing resolution of about 5 ps is discussed in depth. This is confronted with detailed modelling of...Go to contribution page
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Andrea Lavagno (Politecnico di Torino)PosterWe study the hadron yield ratios at finite value of baryon density and temperature by means of an effective relativistic mean-field model with the inclusion of the full octet of baryons, the Delta-isobars degrees of freedom and the lightest pseudoscalar and vector mesons. These last particles are considered in the so-called one-body contribution, taking into account of an effective chemical...Go to contribution page
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Prof. Francisco Fernandez (University of Salamanca)QCDPosterThe discovery of the $J/\psi$ meson in 1974 was the experimental confirmation of the existence of the charmed quark introduced theoretically in 1970 by Glashow, Iliopoulus and Maiani to explain the cancellation of loop diagrams in $K^0$ weak decays. Consisting of a charmed $c$ quark and a $\bar c$ antiquark the $J/\psi$ particle became the starting point of a whole family of bound states...Go to contribution page
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Dr Patrizia Conde-Muino (LIP)Higgs and New PhysicsPosterThe decay of the Standard Model-like Higgs boson into bb is the dominant decay process in the region of low Higgs boson masses. The Higgs search in this channel requires an associated heavy object, allowing for strong discrimination from the dominant multi-jet background processes. We present the status of the Higgs searches in the H->bb channel based on the ATLAS data collected so far in 2011.Go to contribution page
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Alex MottPosterWe search for heavy particles pair produced in 7 TeV proton-proton collisions with data collected by the CMS detector in 2011 at the CERN Large Hadron Collider. The search is sensitive to generic SUSY models provided superpartner particles are kinematically accessible, with minimal assumptions on properties of the Lightest Superpartner Particle (LSP). The baseline selection is inclusive...Go to contribution page
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Dag Gillberg (Carleton)QCDPosterProton-proton collisions at the LHC have provided data to probe quantum chromodynamics (QCD) at distances never reached before with the 7 TeV center-of-mass data taken by the ATLAS detector. While precision tests of strong interactions are interesting in their own right, QCD also provides one of the main backgrounds to many New Physics measurements; furthermore, it is also through tests of...Go to contribution page
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Dr Pelin Kurt (Vanderbilt University)QCDPosterUsing 36 pb-1 of proton-proton collisions at a center-of-mass energy of 7TeV collected by the CMS detector at the Large Hadron Collider at CERN, we have performed studies of the jet transverse structure. The fractional transverse momentum distribution as a function of the distance from the jet axis, is used to define the differential and the integrated jet shape variables. The unfolded...Go to contribution page
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M. Daniel Albornoz Vasquez (LAPTH)Astroparticle PhysicsPosterNext-to-Minimal Supersymmetric Standard Model neutralino dark matter candidates in the 1-15 GeV range are found with a Markov Chain Monte Carlo scanning code. A very light, singlet-like Higgs and/or CP-odd Higgs are needed to achieve such masses. Implications for direct detection (spin independent and spin dependent interactions) and indirect detection (gamma-rays, radio and antimatter) will...Go to contribution page
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Linda GHEGAL (LPMPS Mentouri University, Constantine, ALGERIA.)PosterWe discuss the limits on the scale of noncommutative (NC) parameter Λ_{NC} via studying ttbar pair production in noncommutative extension of the standard model (SM) using the Seiberg-Witten maps and the star product to the first order of the noncommutative parameter Θ_{μν}.Go to contribution page
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Prof. Chun-Khiang Chua (Chung Yuan Christian University)Flavour Physics and Fundamental SymmetriesPosterWe estimate the long-distance contribution to the width difference Delta Gamma_s in the B_s- Bbar_s system from color-allowed two-body and three-body modes. For two-body modes, in addition to the usual D_s^(*) Dbar^(*)_s states, modes with excited states, D^(*)_{s0,s1}, are also included. We find that the contributions from the latter and three-body D^(*)_s Dbar^(*) Kbar^(*) modes are...Go to contribution page
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Mme Ramoona ShehzadiQCDPosterThe production of beauty quarks in ep interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared Q^2 > 10 GeV^2, using an integrated luminosity of 363 pb-1. The beauty events were identified using electrons from semileptonic b decays with a transverse momentum 0.9 < p_T^e < 8 GeV and pseudorapidity |eta^e| < 1.5. Cross sections for beauty...Go to contribution page
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Mme Ramoona ShehzadiQCDPosterPhotoproduction of beauty and charm quarks in events with at least two jets has been measured with the ZEUS detector at HERA using an integrated luminosity of 133 pb-1. The fractions of jets containing b and c quarks were extracted using the invariant mass of charged tracks associated to secondary vertices and the decay-length significance of these vertices. Differential cross...Go to contribution page
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M. Aharon LevyQCDPosterThe energy dependence of the photon-proton total cross section, sigma_tot, was determined from e+p scattering data collected with the ZEUS detector at HERA at three values of the center-of-mass energy, W, of the gamma-p system in the range 194 < W < 296 GeV. This is the first determination of the W dependence of sigma_tot from a single experiment at high W. Parameterizing sigma_tot ~...Go to contribution page
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Dr Biagio Di Micco Di Micco (CERN)QCDPosterWe present the measurement of the muon inclusive differential cross section dSigma/dpT in pp collisions at sqrt(s) = 7 TeV. The analysis is performed in the pseudorapidity interval |eta| <2.5 for muon of transverse momentum 4 < pT < 100 GeV. The data have been recorded using different configurations of the level-1 muon trigger for an integrated luminosity of 1.4 pb-1. The result is compared...Go to contribution page
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Mme Carolina Gabaldon (CERN)AcceleratorsPosterThe luminosity is measured in ATLAS by several detectors and methods, both online and offline. This poster will present briefly the luminosity detectors in ATLAS and explain in some detail how they were used to extract and publish luminosity during the 2010 data taking. One of the challenges in measuring the luminosity at the LHC comes from the fact that many interactions typically occur...Go to contribution page
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Dr Antonio BARONCELLI (INFN/Roma TRE)QCDParallel session talkMeasurements of W+jets and Z+jets cross sections (including the case where at least one jet contains a b-hadron) in proton-proton collisions with the ATLAS detector are reported. Cross sections, in both the electron and muon decay modes of the bosons, are presented as a function of jet multiplicity and of the transverse momentum of the leading and next-to-leading jets in the event....Go to contribution page
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Clemens Lange (DESY)Top and Electroweak PhysicsPosterThe measurement of the top-quark pair production cross-section is a powerful tool to test the Standard Model (SM) at a new energy. With the recent advances in theoretical calculations that led to predictions at a precision level of 10\%, this measurement particularly provides a precision test of the theory of Quantum Chromodynamics. At the same time, the decays of top-quark pairs are...Go to contribution page
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Hovhannes Khandanyan (UI Urbana)Top and Electroweak PhysicsPosterWe present a measurement of the production cross section of top quark pairs in proton-proton collisions at sqrt(s) = 7 TeV recorded with the ATLAS detector at the CERN Large Hadron Collider. Using the 2011 ATLAS dataset, candidate events are selected in the dilepton topology with large missing transverse energy and at least two jets. In this analysis backgrounds from Z->ll and...Go to contribution page
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Justin GriffithsQCDPosterThe Z->tautau cross-section has been measured with the ATLAS experiment at the LHC in four different channels, depending on the decays of the two tau leptons: electron-hadrons, muon-hadrons, electron-muon and muon-muon. The analysis is based on the data sample collected in 2010, corresponding to an integrated luminosity of 36 pb-1, at a proton-proton centre-of-mass energy of 7 TeV. The...Go to contribution page
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Andreas Petridis (ATLAS)Top and Electroweak PhysicsPosterA measurement of ZZ production cross section in proton-proton collisions at sqrt{s} = 7 TeV using ~1 fb-1 of data collected by the ATLAS experiment at the LHC is presented. In this poster we discuss in detail the systematic uncertainties to the cross section measurement, and the data driven background estimate technique, which is also used in the measurement of the WZ production cross...Go to contribution page
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Sunil Bansal (University of Antwerp, Antwerpen, Belgium)QCDPosterA measurement of underlying events (UE) using Drell-Yan (DY) process around Z-resonance, is performed in proton-proton collision at centre of mass energy $\sqrt{s}$ = 7 TeV using data collected by CMS experiment at the LHC during the year 2010 and corresponding to an integrated luminosity of 36 pb$^{-1}$. %Experimentally, it is difficult to separate hard and soft components in most of the...Go to contribution page
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M. HERBERT ROHRINGER (Inst HOCHENERGIEPHYSIK WIEN AUSTRIA)QCDPosterThe Υ production cross section in proton-proton collisions at √s = 7 TeV is measured using a data sample collected with the CMS detector at the LHC. We also report the measurement of the Υ(1S), Υ(2S), and Υ(3S) differential cross sections as a function of transverse momentum and rapidity.Go to contribution page
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Martin TripianaQCDPosterWe present the latest ATLAS measurement of the cross section for the inclusive production of isolated prompt photons of $pp$ collisions at a centre-of-mass energy $\sqrt{s}$ = 7 TeV, as well as the measurement of diphoton production. Photon candidates are identified by combining information from the calorimeters and from the inner tracker. Residual background in the selected sample is...Go to contribution page
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Prof. George W.S. Hou (National Taiwan University)Flavour Physics and Fundamental SymmetriesPosterCPV measurment in Bs -> J/psi phi at the Tevatron, sin2Phi_Bs, hint at new physics, with the 4th generation the simplest explanation. At the same time, great progress is made already at the LHC for the direct search of 4th generation quarks. We show that a precise measurement of sin2Phi_Bs by LHCb, together with a measurement (combining LHCb, ATLAS and CMS) of Bs -> mu+mu- at slightly above...Go to contribution page
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Noureddine Mebarki (Mentouri University)PosterNew cosmological aspects of Seiberg-Witten noncommutative geometry (NCG) are discussed and an FRW like model is presented. The NCG black hole apparent horizon is determined and the corresponding Hawking temperature is obtained by a Kodama like observer via the tunelling effect. Moreover, it is shown that because of the torsion and anisotropy generated by NCG, a new mechanism explaining...Go to contribution page
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Dr Oliver Rosten (University of Sussex)PosterUsing scalar field theory as a template, I will discuss new insights into the structure of theory space emerging from the Exact Renormalization Group. I will outline how conformal symmetry is realized in this framework and then discuss the spectrum of fixed-points and how this is tied up with the renormalization of composite operators. Finally, I will mention possible constraints on asymptotic...Go to contribution page
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Dr Zhao-Ting PAN (LPSC Grenoble)Flavour Physics and Fundamental SymmetriesPosterThe measurements of inclusive semileptonic B-meson decays allow a precise determination of the CKM matrix elements |V_{ub}| and |V_{cb}|, relevant for the study of flavor and CP violation in the quark sector. This requires, from the theoretical counterpart, the calculation of the NNLO corrections to differential decay distributions, from which it is possible to derive predictions for...Go to contribution page
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Zhao-ting Pan (LPSC Grenoble)Top and Electroweak PhysicsPosterThe measurements of inclusive semileptonic B-meson decays allow a precise determination of the CKM matrix elements |V_{ub}| and |V_{cb}|, relevant for the study of flavor and CP violation in the quark sector. This requires, from the theoretical counterpart, the calculation of the NNLO corrections to differential decay distributions, from which it is possible to derive predictions for...Go to contribution page
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Dr Carla Distefano (LNS-INFN)Astroparticle PhysicsPosterANTARES is currently the largest neutrino detector on the Northern Hemisphere. Operating since May 2008 in its full configuration, it aims to detect high-energy cosmic neutrinos. In the absence of an astrophysical standard candle, a possible way to measure the angular resolution and the pointing accuracy for a neutrino telescope is to look at “Moon shadow” in the atmospheric muon flux. The...Go to contribution page
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Dr Valery Lyuboshitz (Joint Institute for Nuclear Research ( Dubna, Russia ))PosterThe coherent inelastic processes of the type a --> b, which may take place in the interaction of hadrons and $\gamma$ quanta with nuclei at very high energies (the nucleus remains the same), are theoretically investigated. For taking into account the influence of matter inside the nucleus, the optical model, based on the conception of the refraction index, is used . Analytical formulas for...Go to contribution page
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Diego Aristizabal (Universite de Liege)Neutrino PhysicsPosterIn the standard seesaw mechanism, finite corrections to the neutrino mass matrix arise from one-loop self-energy diagrams mediated by a heavy neutrino. In this talk I will discuss the impact that these corrections may have in the different entries of the tree-level neutrino mass matrix, paying special attention to their dependence with the seesaw model parameters. It will be shown that due to...Go to contribution page
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Manuela Vecchi on behalf of the ANTARES Collaboration (CPPM)Astroparticle PhysicsPosterThe ANTARES Collaboration has developed a Target of Opportunity strategy to enhance the detection prospects to transient sources of high energy neutrinos, searching for an optical counterpart associated either to a single neutrino of high energy, either to a doublet of events in space and time coincidence. The ANTARES alert system can trigger the observation with a network of optical...Go to contribution page
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Prof. Ali N. khorramian (Semnan university and IPM)QCDPosterIn this article we present the results of our QCD analysis for proton structure function $F_{2}^{p} (x,Q^2)$ in order to determine the parton distributions at next-to-leading order (NLO) of QCD. We also study the heavy quark contributions to the proton structure function $F_2^i(x,Q^2)$, with $i$ = $c$, $b$ within the framework of the so called `fixed flavor number scheme' (FFNS) parton...Go to contribution page
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Joana Machado Miguéns (LIP (Lisbon))Detector R & D and data handlingPosterATLAS has been successfully collecting 7 TeV pp collision data from the LHC since 2010, at a rate that will ultimately reach 40 MHz for nominal LHC conditions. The ATLAS trigger system handles this enormous data flow, providing efficient rejection and maintaining an unbiased efficiency for rare signals. It is organized in three levels that reduce the rate to approximately 200 Hz, by...Go to contribution page
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Frank Seifert (TU Dresden)Top and Electroweak PhysicsPosterIdentification and reconstruction of hadronically decaying tau leptons is essential for many physics studies at the LHC, e.g. searches for new physics like the Higgs boson. In about 35% of the cases tau leptons decay leptonically into electrons or muons and in about 65% of the cases they decay hadronically. Since it is impossible to distinguish the leptonically decaying tau leptons from...Go to contribution page
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Daci Nadir (Cern)Detector R & D and data handlingPosterThe CMS high-resolution electromagnetic calorimeter (ECAL) comprises 75848 lead tungstate (PbWO4) crystals and is optimized for the discovery of the SM Higgs boson in its twophoton decay mode. With the unprecedented collision rate at the Large Hadron Collider (LHC), the electron/photon (EG) Trigger plays a major role in selecting the collisions most likely to yield something new and...Go to contribution page
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Dr Kirika Uchida (Universität Bonn)Top and Electroweak PhysicsPosterMany physics analyses with the ATLAS detector expect to have jets originating from b-quarks. Algorithms that allow to identify those jets are thus of great importance and it is crucial to understand their performance, namely the b-tagging efficiencies, misidentification efficiencies and calibration. The final state of single lepton top pair decays is characterized by at least four jets...Go to contribution page
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Dr Michael Sarrazin (University of Namur (FUNDP))PosterWe show that at low energy, any multidimensional universe containing two branes can be described as a two-sheeted spacetime in the formalism of the noncommutative geometry. This equivalence implies a model-independent phenomenology. Matter swapping between two branes is predicted through fermionic oscillations at very low energy. This phenomenon can be experimentally studied with present-day...Go to contribution page
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Dr tomas Jezo (LPSC)Higgs and New PhysicsPosterWe present the phenomenology of a class of models with an extended electroweak gauge group of the form SU(2)xSU(2)xU(1), often denoted as G(221) models. This includes Grand Unified Theory motivated models such as "left-right" as well as "non-universal" models. Given the most recent bounds on the parameter space derived from the low-energy precision measurements, we show expected signals for...Go to contribution page
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Adrien Besse (LPT Orsay / Soltan Institute for Nuclear Physics)QCDPosterExclusive leptoproduction of vector mesons has been the subject of recent significant progress, both theoretically and experimentally. In particular, the hard regime with a highly virtual photon exchange allows to separate a short distance dominated amplitude of hard subprocess from suitably defined hadronic objects. However, a consistent picture is still missing, in particular for...Go to contribution page
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Mauro VerzettiHiggs and New PhysicsPosterThe importance of decays of new particles to taus led to the development of innovative tau reconstruction programs by the CMS collaboration. The performance of tau reconstruction algorithms, their validation by the measurement of isolated taus from vector boson decays and searches for new physics processes, e.g., MSSM higgs decays to taus, will be discussed.Go to contribution page
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Dr Valery Lyuboshitz (Joint Institute for Nuclear Research ( Dubna, Russia ))PosterSpin correlations for the $\Lambda \Lambda$ and $\Lambda \bar{\Lambda}$ pairs, generated in relativistic heavy ion collisions, and related angular correlations at the joint registration of hadronic decays of two hyperons, in which space parity is not conserved, are analyzed. The correlation tensor components can be derived from the double angular distribution of products of two decays by...Go to contribution page
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Dr Luis Gonzalez-Mestres (LAPP)PosterWMAP and Planck open the way to unprecedented Big Bang phenomenology, not only for the standard Big Bang model but also for less conventional approaches including pre-Big Bang patterns. An example is provided by the recent claim (Gurzadyan et al.) that the cosmological sky is a weakly random one with mostly regular signal. If confirmed, this situation would have significant implications not...Go to contribution page
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Miguel Pato (Universita' Padova / IAP Paris / ITP Zurich)Astroparticle PhysicsParallel session talkWe investigate the reconstruction capabilities of Dark Matter properties from future ton-scale direct detection experiments using several targets. Adopting realistic values for the exposure, energy threshold and resolution of Dark Matter experiments which will come online within 10 years, the degree of complementarity between different targets is quantified. While a measurement of the Dark...Go to contribution page
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Dr Subhayan Mandal (University Of Liege)PosterWe establish the equation of motion of pseudoscalar particles coupled to an electromagnetic field in a classical gravitational background through the use of conformal time and flat geometry. We show that in general the expansion of the universe leads to larger mixing than in a stationary universe. We also show that for a broad range of parameters, one can obtain a resonance mixing, i.e. a...Go to contribution page
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Christian FaerberDetector R & D and data handlingPosterThe LHCb calorimeter comprises the scintillator pad detector, preshower, electromagnetic Shashlyk type (ECAL) and hadronic Tile calorimeters, arranged in pseudo-projective geometry. All the four detectors follow the general principle of reading the light from scintillator tiles with wave-length shifting fibers, and transporting the light towards photomultipliers, all following the 25 ns...Go to contribution page
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Dr Oliver Maria Kind (Humboldt University Berlin)Top and Electroweak PhysicsPosterThe electro-weak production of single top quarks is of great interest for many aspects in and beyond the standard model. The reconstruction of such events is a demanding task and requires skilful analysis methods in order to achieve a good background suppression. At ATLAS, a simple cut-based analysis is used for the reconstruction of single-top t-channel events, as well as more complex...Go to contribution page
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Dr Luigi Scorzato (ECT*)Flavour Physics and Fundamental SymmetriesPosterWe report on preliminary non-perturbative computations of the renormalization constants in the RI-MOM scheme relevant for the lattice action with Nf=4 dynamical flavours currently used by the European Twisted Mass Collaboration (ETMC). The knowledge of these constants is necessary in order to extract physical quantities from the rich program of lattice QCD simulations being performed by the...Go to contribution page
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Dr Martin Spinrath (SISSA)Flavour Physics and Fundamental SymmetriesPosterWe propose new classes of models which predict both tri-bimaximal lepton mixing and a right-angled Cabibbo-Kobayashi-Maskawa (CKM) unitarity triangle, alpha approximately 90 degrees. The ingredients of the models include a supersymmetric (SUSY) unified gauge group such as SU(5), a discrete family symmetry such as A4 or S4, a shaping symmetry including products of Z2 and Z4 groups as well as...Go to contribution page
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M. Djamel GHAFFOR (Laboratoire de Physique Théorique d'Oran)Higgs and New PhysicsPosterWe present a scalar extension of the Standard Model with two singlets. The first singlet is stable and will be considered as WIMP candidate and the second is unstable and will mix to the Higgs boson field. The WIMP candidate will have mass of few GeV (the DAMA/LIBRA and CoGenT collaborations). The Higgs boson decay modes into dark(hidden) sector is discussed.Go to contribution page
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M. Aharon LevyQCDPosterCharged particle production has been studied in neutral current deep inelastic ep scattering with the ZEUS detector at HERA using an integrated luminosity of 0.44 fb-1. Distributions of scaled momenta in the Breit frame are presented for particles in the current fragmentation region. The evolution of these spectra with the photon virtuality, Q2, is described in the kinematic region...Go to contribution page
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Dr Alex Martyniuk (University of Manchester)Higgs and New PhysicsPosterWe present the search results for a light charged Higgs boson produced in top pair events and decaying into csbar in pp collisions at sqrt(s)= 7 TeV with the ATLAS detector. The analysis uses a data sample corresponding to an integrated luminosity of 35 pb^{-1}. The search is based on the semi-leptonic channel of ttbar candidates and analyzes the invariant mass distribution of two jets in the...Go to contribution page
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Michael Werth (UC Irvine ATLAS)PosterWe present a search for pair production of heavy quarks Q4 decaying via Q4 -> qW -> q l nu. We perform approximate mass reconstruction by assuming that the boosted W decays to a charged lepton and neutrino which are nearly collinear. We use 37 inverse picobarns of integrated luminosity from pp collisions at sqrt(s) = 7 TeV collected by the ATLAS detector. The data are in agreement with...Go to contribution page
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Xifeng RUAN (LAL)Higgs and New PhysicsPosterUsing about 1 fb-1 of ATLAS data at 7 TeV proton-proton centre-of-mass energy taken in 2011, Higgs boson searches in the Higgs decay mode H → WW (∗) → lνlν (l = e, μ) have been performed with sensitivity exceeding anything currently available. Important sensitivity to Higgs bosons masses between about 140 and 180GeV is available. The results are also interpreted in a model with a fourth...Go to contribution page
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Mme Sarah Heim (Michigan State University)PosterWe present a search for high mass dielectron resonances using 7 TeV pp collisions recorded by the ATLAS detector in 2011. The reconstructed invariant mass spectrum is compared to standard model expectations. Possible signals include heavy neutral gauge bosons and the Randall-Sundrum graviton. In the absence of a signal we set exclusion limits for various models using a Bayesian approach.Go to contribution page
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Simon Viel (University of British Columbia - TRIUMF)PosterThis poster describes the search for high mass mu+mu- resonances in pp collisions at sqrt(s) = 7 TeV at the LHC. A first search was conducted using data recorded by the ATLAS experiment during 2010, corresponding to a total integrated luminosity of 40 pb-1. No statistically significant excess above the Standard Model processes was observed in our search region of dimuon invariant mass above...Go to contribution page
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M. Jeremiah Jet Goodson (Stony Brook University)PosterThe results of a search for supersymmetry in multilepton final states using the ATLAS detector is presented. Such signals require three or more leptons, jets, and missing transverse energy. This channel provides the advantage that the contribution due to standard model backgrounds is expected to be very low. Results from the 2011 data-taking will be reported.Go to contribution page
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Elena Ferri (University of Milano Bicocca and INFN, Sezione di Milano-Bicocca)Neutrino PhysicsPosterThe Cryogenic Underground Observatory for Rare Events (CUORE) is an experiment to search for neutrinoless double beta decay (0nuDBD) in Te-130 and other rare processes. The observation of 0nuDBD would indicate that neutrinos are Majorana particles and would provide information about the absolute neutrino mass scale. CUORE is a bolometric detector composed of 988 TeO2 crystals, with the...Go to contribution page
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Thorsten Dietzsch (University of Heidelberg)PosterWe present a search for physics beyond the Standard Model in proton-proton collisions at a centre-of-mass energy of sqrt(s) = 7 TeV, performed with the ATLAS Detector at the Large Hadron Collider (LHC). In 2010, no sign of new physics was observed in dijet mass and angular distributions and the world's best limits were set on a variety of models of new physics, including excited quarks, quark...Go to contribution page
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Valerio Rossetti (IFAE - Barcelona)PosterWe present results by the ATLAS experiment on a search for new physics in pp collision events at the LHC with mono-jets plus large missing transverse energy in the final state. The data are compared to the SM predictions, dominated by the irreducible background from W/Z+jets production with neutrinos and mis-identified electrons and muons in the final state. The results are interpreted in the...Go to contribution page
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Predrag Milenovic (ETH Zurich, Switzerland)PosterThe results of searches for Supersymmetry in events with two same-sign isolated leptons, hadronic jets, and missing transverse energy in the final state are presented. The searches use pp collisions at 7 TeV collected in 2011 by the CMS experiment.Go to contribution page
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Xabier Anduaga (Instituto de Fisica La Plata (CONICET -UNLP))PosterA variety of new physics models involving extra dimensions predict photons in the final states from pp collisions at energies accessible at the Large Hadron Collider. The search for new particles in the diphoton channel, such as the Kaluza-Klein resonant mode of the graviton in the Randall-Sundrum model, carried out by the ATLAS experiment is presented. Event selection and optimization, as...Go to contribution page
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Miroslav Myska (IP ASCR, Prague)Top and Electroweak PhysicsPosterSearches for the kinematic selection criteria for estimation of multiple parton interaction fraction in pp collisions at \sqrt{s} = 14 TeV are presented using the eikonalization of the cross section implemented in the HERWIG++ MC generator. W^+ boson pair production is studied in the muon decay channel. Four types of the main background processes are discussed and analyzed. These include...Go to contribution page
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Carolina Deluca (Stony Brook University)PosterSearches for the pair production of first and second generation scalar leptoquarks have been performed using 35 pb−1 of proton-proton collision data recorded by the ATLAS detector at sqrt(s) = 7 TeV, delivered by the LHC during 2010. We search for leptoquarks in events with two oppositely charged muons or electrons and at least two jets, and in events with one muon or electron, missing...Go to contribution page
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Dr Monica D'Onofrio (University of Liverpool)PosterResults are presented of a search for new physics in events with large missing transverse energy and heavy flavor jet candidates in √s=7 TeV proton-proton collisions recorded by the ATLAS experiment at the Large Hadron Collider in 2011. Events are required to contain energetic jets, of which one or two must be identified as a b-jet, large missing transverse energy and at least one isolated...Go to contribution page
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Mme Jeanette Lorenz (Fakultaet fuer Physik, LMU Muenchen)PosterOne of the promising channels in the searches for Supersymmetry is the 1-lepton channel which requires one isolated electron or muon, multiple jets and a high Missing Transverse Energy. Some SM processes like top, W and QCD can show similar experimental signatures. The magnitude of these backgrounds must be understood well. Various methods to estimate these backgrounds are presented.Go to contribution page
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Yuan CHAOQCDPosterStudies of hadron production in pp collisions, including charged particle transverse momentum, pseudorapidity and event-by-event multiplicity distributions at sqrt(s) = 0.9, 2.36 and 7 TeV are shown. Measured spectra of identified strange hadrons, reconstructed based on their decay topology, are also presented. Comparisons to several QCD Monte Carlo models and tunes are discussed. Results on...Go to contribution page
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Mme Angelika Georgakopoulou (NTUA)Astroparticle PhysicsPosterA High Spectral Resolution Lidar (HSRL) design study, which will lead to a prototype, is being developed for atmospheric monitoring in Ultra High Energy Cosmic Ray Observatories aiming to improve the accuracy of the measurement of the differential scattering coefficients of the aerosol and clouds in near UV region. The specification studies of the candidate Fabry-Perot receivers for the...Go to contribution page
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Dr Airton Deppman (São Paulo University)PosterThe statistical approach first proposed by Hagedorn was suceesful in the interpretation of many aspects of high energy hadron collisions. One important result of Hagedorn's theory~\cite{Hagedorn} is the existence of a critical temperature, $T_c$, above which the composed system, the so-called fireball, is impossible to go. However, when still higher energies were available at new...Go to contribution page
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Daniel Muenstermann (CERN)Neutrino PhysicsPosterThe determination of two important properties of the neutrino is still pending: its rest mass and its nature - Dirac or Majorana particle. The observation of neutrinoless double beta decay would clarify both, but the expected half-life of more than 10^25 years for this decay is an ambitious challenge. Recently, first experiments have been commissioned that will be able to probe this...Go to contribution page
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M. Benjamin Jones (Massachusetts Institute of Technology)Neutrino PhysicsPosterThe high resolution 3D tracking offered by liquid argon time projection chambers make them an excellent candidate for future neutrino detectors in the next generation of long baseline experiments. In order to utilize this emerging detector design for such experiments, the scalability and physics capabilities of the technology must be proven. The MicroBooNE experiment is a 170 ton liquid...Go to contribution page
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Essma REDOUANE-SALAH (Physics)Detector R & D and data handlingPosterThe electronic states of an atom in a uniform electric field are modified by the Stark effect. If the field is strong enough, ionization of the atom eventually occurs due to the tunnel effect. In the case where the electron is initially in a state of orbital angular momentum < L > perpendicular to the field F, it was expected that the transverse velocity of the extracted electron is in...Go to contribution page
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Dr David Emmanuel-Costa (Instituto Superior Tecnico, Lisboa, Portugal)PosterThe idea of grand unification in a minimal supersymmetric SU(5)xSU(5) framework is revisited. It is shown that the unification of gauge couplings into a unique coupling constant can be achieved at a high-energy scale compatible with proton decay constraints. This requires the addition of a minimal particle content at intermediate energy scales. In particular, the introduction of the SU(2)_L...Go to contribution page
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Evgueni GoudzovskiQCDPosterThe NA48/2 collaboration has accumulated ~45000 semi-leptonic K charged decays to pi0 pi0 e+- neutrino (Ke400), increasing the world available statistics by more than two orders of magnitude. Low background contamination and very good pi0 reconstruction bring the first precise measurement of the Branching Fraction and decay Form Factor at the percent level. Concurrently, more than one...Go to contribution page
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Dr Luis Gonzalez-Mestres (LAPP)Astroparticle PhysicsPosterIt is not yet clear whether the observed flux suppression for ultra-high energy cosmic rays (UHECR) at energies above 4.10E19 eV (AUGER, HiRes) is a signature of the Greisen-Zatsepin-Kuzmin (GZK) cutoff or corresponds to the maximum energies available at the relevant sources. Both phenomena can be sensitive to violations of standard special relativity modifying cosmic-ray propagation or...Go to contribution page
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Danilo Enoque Ferreira de Lima (University of Glasgow)Detector R & D and data handlingPosterThe online event selection is crucial to reject most of the events containing uninteresting background collisions while preserving as much as possible the interesting physical signals. The b-jet selection is part of the trigger strategy of the ATLAS experiment and a set of dedicated triggers is presently contributing to the event selection for the 2011 running. The b-jets acceptance is...Go to contribution page
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Dr Alexey Guskov (Joint Institute for Nuclear Research)QCDPosterThe COMPASS experiment at CERN uses either muon or hadron beams with a longitudinally or transversely polarized solid target, liquid hydrogen or heavy nuclear targets. The COMPASS Collaboration has recently submitted a proposal for additional measurements in the next years. The proposal (COMPASS-II) was approved by the CERN Research Board in December 2010. It includes studies of: 1) Drell-Yan...Go to contribution page
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M. Yung-Shun Yeh (Institute of Physics, National Chiao Tung University)Neutrino PhysicsPosterThe Daya Bay Neutrino Experiment, located in Shenzhen, China, will be probing the last unknown neutrino mixing angle $\theta_{13}$ with a sensitivity of 0.01 or better in $\sin^{2}2\theta_{13}$ at 90% C.L. through a measurement of the relative rates and energy spectra of reactor antineutrinos at different baselines. This measurement will provide a better understanding of the neutrino mixing...Go to contribution page
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Dr HERVE DE KERRET (APC)Neutrino PhysicsPosterThe Double Chooz neutrino experiement is taking data at the French nuclear plant of Chooz, and will be very soon improving the world best limit on the teta 13 neutirno mixing angle, which is the last non measured measured oscillation angle. This expeirment is the first of a new neutrino generation of experiment, and the only one currently taking data. These are Reno in Korea, Daya...Go to contribution page
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Prof. Ali N. Khorramian (Semnan university and IPM)QCDPosterWe describe the most recent H1 and ZEUS diffractive DIS data obtained by various methods with very large uncertainties associated with the treatment of proton dissociation processes and compare them in detail. We consider pomeron as an object with parton distribution function, evolving according to the DGLAP equations. Having performed a global t analysis, we achieve a very good description of...Go to contribution page
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Dr Daniele Fargion (Physics Departm Rome 1 INFN 1)Neutrino PhysicsPosterAtmospheric neutrino may trace cosmic rays spectra, muon and electron neutrino secondaries and their final upgoing nature after mixing inside the Earth. The muon flavor change is oscillating in all directions and they are maximal in vertical axis at 24 GeV ; the upgoing muon neutrino rate and the neutral current or tau or electron showers at tens GeV should combine in a very tuned way in...Go to contribution page
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Prof. Paul Newman (for the LHeC study group) (University of Birmingham)Detector R & D and data handlingPosterThis year the CERN-ECFA-NuPECC Conceptual Design Report on the Large Hadron Electron Collider (LHeC) will be released. This contribution describes design concepts for a new detector, which combines the demands of very high precision with those of large acceptance into a novel device for electron-proton physics at TeV energies. The physics and technical requirements, choices of detector...Go to contribution page
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Prof. Ad van den Berg (KVI/University of Groningen)Astroparticle PhysicsPosterAuthorship: The Pierre Auger Collaboration The Pierre Auger collaboration uses its observatory in Argentina to study ultra-high energy cosmic rays (E> 1 EeV). The baseline detectors are a surface detector array with 1660 water-Cherenkov detectors distributed over an area of 3000 km2 overseen by 24 fluorescence telescopes mounted at the perimeter of this array. Recently, the collaboration has...Go to contribution page
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Dr Valeriy Dvoeglazov (Universidad de Zacatecas)PosterThe Bargmann-Wigner procedure for constructions spin-1 and spin-3/2 fields are well described in the textbooks. We modify this procedure based mainly on the motivations of the ideas of dual electrodynamics and the possibility of the QFT construct with the bosons of opposite parities, and the necessity to have the causal behaviour of the corresponding particles (even in the presence of external...Go to contribution page
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Denis Parganlija (Frankfurt University - Institute for Theoretical Physics)QCDPosterCurrent experimental data provide us with five scalar isoscalar meson states in the low-energy region, i.e. the region up to 1.8 GeV: f0(600), f0(980), f0(1370), f0(1500) and f0(1710). The issue of the structure of these states (quark-antiquark, tetraquark, meson-meson molecules...) has been extensively, but not conclusively, debated in the last decades. We use a U(3)xU(3) Linear Sigma Model...Go to contribution page
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Dr Nicolas Arnaud (LAL)Detector R & D and data handlingPosterThe SuperB experiment is a next generation Super Flavour Factory expected to accumulate 75ab^-1 of data at the Y(4S) in five years of nominal running. In addition to running data at the Y(4S), SuperB will be able to accumulate data from the psi(3770) up to the Y(6S). A polarized electron beam enables unique physics opportunities at SuperB. We discuss the detector design for this new facility.Go to contribution page
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Prof. Elşen Veli Veliev (Department of Physics , Kocaeli University)QCDPosterIn this study, we investigated the temperature dependence of mass and leptonic decay constants for pseudoscalar heavy quarkonium states. We take into account the additional operators in the Wilson expansion at finite temperature and calculate thermal spectral density in the QCD side. Analysis of obtained thermal QCD sum rules shows that at critical temperature, the decay constant decreases...Go to contribution page
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Dr Adrian Bevan (Queen Mary University of London)Flavour Physics and Fundamental SymmetriesPosterCP violation in the charm sector at the precisions accessible by current experiments could be a signature for new physics. So far, time-integrated measurements have provided upper limits in the 1% region, and D0 mixing studies limit any weak mixing phase to be less than 10 or 20 degrees. Future experiments are expected to provide greater precision and may be able to explore time-dependent CP...Go to contribution page
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Diane Cinca (Laboratoire de Physique Corpusculaire Clermont-Ferrand (LPC)-In)Top and Electroweak PhysicsPosterThe top quark has been discovered in 1995 at Fermilab. Being the heaviest known elementary particle, it plays a special role in the Standard Model. The LHC produced first pp collisions at 7 TeV centre-of-mass energies in fall 2009. The top quark was observed in both experiments ATLAS and CMS during 2010. First top mass measurement by ATLAS have been made using 35 pb-1 of data recorded in...Go to contribution page
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Mme Reina Camacho (PhD student)PosterThe searches of final states involving top quarks are one of the most promising way to observe deviation from the Standard Model (SM). Some beyond of the SM theories predict the existence of new particles that are strongly coupled to the top quark, because of its high mass. A particular attention will be devoted to searches for ttbar resonances in the lepton plus jets final states performed...Go to contribution page
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Dr Daniele Fargion (Physics Departm Rome 1 INFN 1)Astroparticle PhysicsPosterUHECR do not arrive from Virgo, do cluster in a spread way around Cen A, do show a nuclei composition. The recent arrival event maps do not confirm an Super Galactic plane arrival as expected on early 2007. To solve the puzzle we suggest a light nuclei UHECR nature whose fragmentation on flight from Virgo make them suppressed, whose spread bending on galactic plane agrees with Cen A cluster,...Go to contribution page
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Dr Conrado Albertus-Torres (Departamento de Física Fundamental. Universidad de Salamanca)Flavour Physics and Fundamental SymmetriesPosterAccuracy on the measurement of the Cabbibo - Kobayashi - Maskawa matrix elements demands a detailed knowledge of semileptonic decays of b -hadrons. In particular, decays involving orbitally excited c-mesons provide an important contribution to the total semileptonic width. Therefore, a better understanding of these processes will reduce the uncertainties in the above mentioned matrix elements....Go to contribution page
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Dr Antonio Baroncelli (INFN / Roma TRE)Top and Electroweak PhysicsParallel session talkWe present a measurement of the Z boson forward-backward asymmetry of the process pp --> γ*/Z + X -> l+l- + X in collisions at sqrt(s) = 7 TeV, where l= e or muon. The asymmetry is measured in the Collins-Soper frame using the angle θ between the incoming quark and outgoing lepton. The measurement uses recent data from the ATLAS experiment. At high dilepton invariant mass, the measurement is...Go to contribution page
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