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Rencontres de Moriond EW 2009

7–14 mars 2009
La Thuile
Fuseau horaire Europe/Paris

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Liste des Contributions

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  1. 70. W and Z masses and production properties
    Dr Jan Stark (LPSC Grenoble, CNRS/IN2P3)
    08/03/2009 08:30
  2. 71. Diboson physics
    M. Thomas Phillips (Duke univ. Durham NC USA)
    08/03/2009 08:55
  3. 65. Standard Model Physics with ATLAS and CMS
    Dr Fabrizio Petrucci (Universita' Roma Tre - Dipartimento di Fisica)
    08/03/2009 09:15
    The study of Standard Model (SM) physics is very important at the LHC. Before any discovery can be claimed a detailed understanding of the detectors should be reached and benchmark SM processes should be measured. A precise measurement of the various parameters is crucial as a consistecy check of the SM. Moreover, SM processes can be directly sensitive to new physics, they will allow to...
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  4. 58. Readiness of the ATLAS Experiment for First Data
    M. Thilo Pauly Pauly (CERN)
    08/03/2009 09:50
    The ATLAS detector is one of the experiments at the LHC that will detect high-energy proton collisions at 14 TeV. The commissioning of the detector has started already in 2005 in parallel to the detector installation and is still in progress. The data taken corresponds to noise runs, cosmic muon events and beam background events from single beam in September 2008. We present the current status...
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  5. 72. QCD and backgrounds for LHC
    Mlle Giulia Zanderighi (Oxford Univ., UK)
    08/03/2009 10:15
  6. 61. Readiness of the CMS Detector for First Data
    Emilio Meschi (CERN)
    08/03/2009 10:50
    The CMS Detector completed the first phase of commissioning in September 2008. The detector, data acquisition and distribution, reconstruction and analysis chains were successfully commissioned in a first phase with cosmic ray triggers. On September 10, 2008 CMS captured the first events from the LHC beam. In the following few days the experiment accumulated many beam-splash and beam halo...
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  7. 73. EW physics at HERA
    Mlle Nao Okazaki (KEK)
    08/03/2009 16:55
  8. 74. High mass SM Higgs (Tevatron)
    M. Douglas Benjamin (Duke University,Durham - NC USA)
    08/03/2009 17:10
  9. 76. Low mass SM Higgs (Tevatron)
    M. Yuji Enari (LPNHE, Paris, France)
    08/03/2009 17:30
  10. 50. Higgs Physics and Beyond the SM at ATLAS/CMS
    Dr Nicola De Filippis (LLR - Ecole Polytechnique)
    08/03/2009 17:50
    Perspective searches for Higgs bosons and new particles expected by supersymmetric and extra dimension models are presented in the context of current strategies of the CMS and ATLAS experiments. An excess of events will be looked for in the first data taking period at LHC as an indication of the existence of new particles. Focus is on the potential both of the discovery and of the exclusion...
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  11. 5. Revisiting the Global Electroweak Fit of the Standard Model and Beyond with Gfitter
    M. Martin Goebel (DESY / University of Hamburg)
    08/03/2009 18:10
    The global fit of the Standard Model to electroweak precision data, routinely performed by the LEP electroweak working group and others, demonstrated impressively the predictive power following from electroweak unification. We have revisited this fit in view of (i) the new generic fitting package Gfitter, developed to allow flexible model testing in high-energy physics, and (ii) a more...
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  12. 77. BSW Higgs (Tevatron)
    M. Abid Patwa (Brookhaven National Lab NY USA)
    08/03/2009 18:45
  13. 78. Searches in lepton final states
    M. Marc Hohlfeld (Universität Mainz, Germany)
    08/03/2009 19:05
  14. 16. Searches for new physics at the Tevatron in photon and jet final states
    Dr Shin-Shan Yu (Fermi National Accelerator Laboratory)
    08/03/2009 19:25
    Photons and jets are the most copiously produced particles at the Fermilab Tevatron. By analyzing events with photons and jets, we may search for hints of physics beyond the standard model of elementary paticles. Models which predict photon and jet signatures include SUSY, extra dimension, leptoquarks, etc. Both model-driven and signature-based searches have been performed. I will present the...
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  15. 49. Beyond SM : noncommutative approach
    Dr Christoph Stephan (Institut für Mathematik, Universität Potsdam)
    08/03/2009 19:45
    Alain Connes' noncommutative geometry (NCG) allows to unify the classical Yang-Mills-Higgs theory and General relativity in a single geometrical framework. This unification implies restrictions for the couplings of the Standard Model (SM) at a given cut-off energy which reduce the degrees of freedom compared to the classical SM. I will give an introduction to the basic ideas of NCG and...
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  16. 79. Search for new Physics at HERA
    Mlle Thi Nguyet Thrinh (LPNHE, Paris, France)
    09/03/2009 08:25
  17. 82. Review of phi1,phi2,ph3 measurements
    Dr Karim Trabelsi (KEK)
    09/03/2009 08:40
  18. 42. Radiative and electroweak penguin measurements at B-factories
    Prof. Mikihiko Nakao (KEK)
    09/03/2009 09:10
    Belle and BaBar have been exploring radiative and electroweak B meson decays that are sensitve to physics beyond the Standard Model, and the CKM unitarity triangle parameters within the context of the Standard Model. In this talk I review the latest measurements on inclusive and exclusive b -> s gamma and b -> d gamma processes and exclusive b -> s l+ l- processes, and discuss their implications.
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  19. 80. Mixing and DeltaGamma_s, Tevatron
    Dr Avdhesh Chandra (UC Riverside)
    09/03/2009 09:35
  20. 9. New perspectives for heavy flavour physics from the lattice
    Dr Rainer Sommer Sommer (DESY)
    09/03/2009 10:10
    We give a short account of the present status of the computation of QCD matrix elements needed for connecting experimental B- and D-meson decays to the fundamental electroweak Lagrangian. We then emphasise present developments, in particular the European Coordinated Lattice Simulations. These provide perspectives for precision determinations with all sources of errors accounted for.
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  21. 81. Review of Vub and Vcb
    M. Fabrizio Bianchi (Dipartimento di Fisica Sperimentale, Turin, Italy)
    09/03/2009 10:40
  22. 44. Readiness of the LHCb experiment for first data
    Dr Adriano Lai (INFN)
    09/03/2009 16:55
    The talk deals with the present status of the LHCb detector, with special emphasis on the commissioning tests and analysis. The detector response has been widely tested by means of cosmic ray events and with the very first beam before the LHC rupture in September 2008. The results of these studies are reported. Finally, ideas on the planned use of the first beam data, expected in 2009, are presented.
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  23. 18. Symmetries and Asymmetries of B -> K* mu+ mu- Decays in the Standard Model and Beyond
    Mlle Aoife Bharucha (IPPP, Durham)
    09/03/2009 17:15
    The rare decay B -> K* (-> K pi) mu+ mu- is regarded as one of the crucial channels for B physics as the polarization of the K* allows a precise angular reconstruction resulting in many observables that offer new important tests of the Standard Model and its extensions. These angular observables can be expressed in terms of CP-conserving and CP-violating quantities which we study in terms of...
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  24. 83. Lifetimes and rare decays (Tevatron)
    M. Jonathan Lewis (Fermilab Batavia - IL)
    09/03/2009 17:35
  25. 68. Hot Topics in BaBar
    M. Joao Costa (phD)
    09/03/2009 17:55
    This presentation covers the recent BaBar results on a search for a light Higgs decaying to mu+mu- in Y(3S) decays as well as the searches for charged lepton flavor violation in the decays Y(3S) -> l tau (l=e,mu) and of tau -> 3l (l=e,mu)
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  26. 84. Hot topic Belle
    M. Andrzej Bozek (H. Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Cracow, Poland)
    09/03/2009 18:15
  27. 85. 4th generation and B decays
    M. Amarjit Soni (Brookhaven National Lab , NY, USA)
    09/03/2009 18:50
  28. 86. Review of rare decays (Babar & Belle)
    Mlle Elisabetta Baracchini (University of California Irvine USA)
    09/03/2009 19:10
  29. 87. S4 and A4 -based flavour models
    Dr Federica Bazzocchi (VU Amsterdam)
    09/03/2009 19:30
  30. 21. CKM fits as of winter 2009 and sensitivity to New Physics
    Dr Vincent Tisserand (LAPP IN2P3 CNRS et Université de Savoie)
    10/03/2009 08:30
    The BaBar and Belle experiments, at the B-factories SLAC-PEPII and KEK-B, have collected over the last decade an unprecedented sample of about 1300 million of $B_d-\bar B_d$ pairs at the $\Upsilon$(4S) resonance. At the same time the CDF and D0 experiments at TeVatron, with about 2.8/fb each, have performed extensive measurements on $B_s-\bar B_s$ mesons mixing. Right before the startup of...
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  31. 35. CKM elements from squark-gluino loops
    M. Andreas Crivellin (TTP Karlsruhe)
    10/03/2009 08:50
    We compute the finite renormalisation of the CKM matrix induced by gluino-squark diagrams in the MSSM with non-minimal sources of flavour violation. Stringent bounds on the flavour-off-diagonal elements of the squark mass matrices are obtained by requiring that the radiative corrections to the CKM elements do not exceed the experimental values. Our bounds on several flavour-changing...
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  32. 19. Status of the Unitarity Triangle analysis
    Dr viola sordini (ETH Zurich)
    10/03/2009 09:10
    The experimental efforts on flavor physics carried on by the B-factories and Tevatron experiments allows to test the Standard Model in the fermion sector. We present here the update of the Unitarity Triangle analysis, exploiting all the available information. Combining the direct measurements on sides and angles of the Unitarity Triangle, we determine the values of the CKM...
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  33. 13. Looking for New Physics - Prospects of B-Physics at LHCb
    Ulrich Uwer (Physikalisches Institut, Heidelberg University)
    10/03/2009 09:30
    With the startup of the LHCb experiment the next round of precision B experiments will be launched. LHCb has access to about 10^12 B meson decays per year allowing significant measurements of even very rare B decays and in particular the precision study of the Bs system. With the measurement of rates, kinematics and CP asymmetries of loop suppressed B decays LHCb will probe the quantum...
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  34. 88. Review on flavor in a warped extra dimension
    M. Matthias Neubert (Johannes Gutenberg University Mainz Germany)
    10/03/2009 10:05
  35. 47. NA62: New Opportunities in Rare Kaon Decays
    M. Augusto Ceccucci (CERN)
    10/03/2009 10:25
    There are three main directions in elementary particle physics. On the one hand experiments are made at the highest possible energies searching for the origin of electroweak breaking and direct evidence of New Physics (NP); a second line of attack aims to study the properties of the neutrinos, both of accelerator and cosmic origin, and of other astro-particle messengers. The third strategy is...
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  36. 89. The SuperB factory project
    Dr Adrian Bevan (Queen Mary University of London)
    10/03/2009 10:45
  37. 33. CLEO's Impact on CKM
    Philip Rubin (George Mason University)
    10/03/2009 17:00
    In the six-quark Standard Model, flavor changing due to the weak force is described by a unitary transformation represented by the 3 × 3 matrix, known as the Cabibbo-Kobayashi-Maskawa (CKM) matrix. The elements of this matrix, constrained theoretically by unitarity, must be determined experimentally. By investigating e+ e- collisions around the charm-quark threshold, the CLEO-c experiment has...
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  38. 62. Measurement of top quark properties at the Tevatron
    Prof. Meenakshi Narain (Brown University)
    10/03/2009 17:20
    I will cover results from CDF and DZero on top quark properties, specifically the top mass, top charge, W helicity in top decays, and top anomalous couplings.
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  39. 90. t-tbar production, etc (Tevatron)
    M. Thomas Schwarz (University of California Davis USA)
    10/03/2009 17:40
  40. 67. Single Top Physics at the Tevatron
    Dr Enrique Palencia (Fermilab)
    10/03/2009 18:00
    We present the first observation of the single top quark production at the Fermilab Tevatron experiments, CDF and D0. After applying the event selection, there is a small expected signal hidden under large and uncertain backgrounds.In order to further separate signal from background events, highly sophisticated methods are needed. The results of the different analyses performed by both...
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  41. 56. Flavor violation in SUSY
    Gudrun Hiller (Dortmund)
    10/03/2009 18:20
    I review opportunities from flavor physics for collider searches and b-physics.
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  42. 39. A stringent test of $\mu-e$ universality in $K\rightarrow l\nu$ decays by NA62 at CERN
    Dr Andreas Winhart (University of Mainz)
    10/03/2009 18:40
    The SM prediction for the ratio of purely leptonic decay rates of the charged kaon $R_K=\Gamma(K_{e2}/\Gamma(K_{\mu2}))$ has an excellent sub-permille precision. Due to the helicity suppression of the SM contribution, the ratio is sensitive to non-SM effects; in particular, LFV contributions in the MSSM can modify it by a few percent without contradicting any other presently known experimental...
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  43. 66. Early Measurement of the W and Z Cross Sections in the Electron Decay Channels with CMS
    David Wardrope (Imperial College London)
    10/03/2009 19:20
    Measurements of the inclusive cross-sections of W and Z in the electron decay modes will be among the first results from the LHC. An overview of the motivation and plans for such measurements with CMS will be presented, with emphasis on describing the use of data-driven methods for efficiency and background determination.
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  44. 92. ZZ → l l nu nu production ( D0 )
    M. Emanuel Strauss (SUNY Stony Brook USA)
    10/03/2009 19:28
  45. 60. Measurement of Z → mumu cross section in LHC
    M. Roberto Di Nardo (University & INFN Roma Tor Vergata)
    10/03/2009 19:36
    One of the first measurements at the LHC will be th Z boson production cross section in proton proton collisions. The different decay channels of the Z boson will also used in the initial data taking period as benchmark process for the calibration of detectors and performance measurements. The overall cross section pp→Z→mu+mu- measurement with first data in ATLAS is discussed.
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  46. 55. Unification in Higher Dimensional Scenario
    Dr Swarup Kumar Majee (CP3-UCL)
    10/03/2009 19:44
    In this talk, I will briefly describe how the characteristics of gauge, Yukawa and quartic coupling evolution change in the presence of universal extra dimensions. The gauge coupling unification scale depends on compactification radius R, and is much lower in comparison to the four-dimensional case. Later, I will mention that the supersymmetric extension of this scenario requires...
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  47. 93. First evidence of WW,WZ->l nu qq at Tevatron
    M. Joseph Haley (Princeton University Princeton - NJ USA)
    10/03/2009 19:52
  48. 43. Hierarchical Soft Terms and Flavor Physics
    M. Marco Nardecchia (SISSA)
    10/03/2009 20:00
    We study the framework of hierarchical soft terms, in which the first two generations of squarks and sleptons are heavier than the rest of the supersymmetric spectrum. This scheme gives distinctive predictions for the pattern of flavor violations, which we compare to the case of nearly degenerate squarks. Experiments in flavor physics have started to probe the most interesting parameter...
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  49. 94. Results from KLOE
    M. tommaso spadaro (KLOE/NA62)
    11/03/2009 08:30
  50. 17. Search for an Ultra Light Higgs Boson in the Rare Decay $K_{L}\rightarrow\pi^{0}\pi^{0}\mu^{+}\mu^{-}$
    M. David Phillips (Graduate Student)
    11/03/2009 08:50
    Using data collected by the KTeV Experiment at Fermi National Accelerator Laboratory in Batavia, Illinois, this study will be the first experimental analysis of $K_{L}\rightarrow\pi^{0}\pi^{0}\mu^{+}\mu^{-}$. Although this decay mode is possible within the Standard Model, it is limited to a very narrow band of phase space. The HyperCP Experiment has recently observed three...
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  51. 28. Heavy scalar dark matter : constraints and observability
    Dr Fu-Sin LING (Service de Physique Théorique - U.L.B. (Brussels))
    11/03/2009 09:10
    We investigate the possibility of having a TeV scale scalar dark matter candidate for different representations of SU(2)L. Aside from gauge interactions, scalar couplings are shown to play a key role. Their contributions to annihilation and DM-nucleon cross-sections are derived, and discussed in light of current direct and indirect dark matter detection experiments.
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  52. 40. The PAMELA Space Experiment
    Dr Emiliano Mocchiutti (INFN (Istituto Nazionale di Fisica Nucleare) Trieste)
    11/03/2009 09:30
    On the 15th of June 2006, the PAMELA satellite-borne experiment was launched from the Baikonur cosmodrome and it has been collecting data since July 2006. The apparatus comprises a time-of-flight system, a silicon-microstrip magnetic spectrometer, a silicon-tungsten electromagnetic calorimeter, an anticoincidence system, a shower tail counter scintillator and a neutron detector. The...
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  53. 95. ATIC
    M. Joachim Isbert (Louisiana State University Baton Rouge USA)
    11/03/2009 09:50
  54. 0. Dark Matter and the PAMELA data
    M. Marco CIRELLI (SPhT - CEA/Saclay)
    11/03/2009 10:25
    Recent data from the PAMELA satellite and a number of balloon experiment have reported unexpected excesses in the measured fluxes of cosmic rays. Are these the first direct evidences for Dark Matter? If yes, which DM models and candidates can explain these anomalies and what do they imply for future searches? Is this all compatible with other constraints?
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  55. 26. Pamela and ATIC - an Astrophysicist View
    Prof. Tsvi Piran (Racah Institute for Physics Hebrew University Jerusalem Israel)
    11/03/2009 10:45
    I review the astrophysical issues that are at the heart of the Pamela and ATIC observations. Specifically I stress the importance of diffusion and escape of Cosmic Rays from the Galaxy as well as the issue of cooling of Cosmic Ray leptons while traveling in the Galaxy. I summarize various astrophysical resolutions of these two observations. I then present a novel idea - the concentration...
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  56. 15. Antimatter cosmic rays : backgrounds or signals ?
    M. Timur Delahaye (LAPTh (Annecy, France))
    11/03/2009 11:10
    Recent PAMELA data seem to indicate an excess in positron cosmic rays around ~10 GeV that may be due to galactic Dark Matter particle annihilation. I will explain how the background of this signal is estimated and focus on the uncertainties that make our task difficult in constraining Dark Matter. I will explain how analysing simultaneously different cosmic ray particles is the only way...
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  57. 97. Dark matter: the MiMac project
    M. Cyril Grignon (LPSC)
    11/03/2009 17:00
  58. 69. Review of direct searches of dark matters and status of EdelweissII
    Prof. Jules Gascon (Universite de Lyon, Universite Lyon 1, CNRS/IN2P3)
    11/03/2009 17:15
    I will review the experimental status in the domain of direct searches for Dark Matter and present future prospects.
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  59. 22. Solar system dark matter and constraints
    Dr Stephen Adler (Institute for Advanced Study)
    11/03/2009 17:40
    I review constraints on solar system-bound dark matter, and discuss the possibility that dark matter could be gravitationally bound to the earth and other planets. I briefly survey various empirical constraints on such planet-bound dark matter, and discuss effects it could produce if present, including anomalous planetary heating and flyby velocity changes.
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  60. 11. Solar system dark matter and simulations
    Dr Annika Peter (California Institute of Technology)
    11/03/2009 18:05
    One method to search for particle dark matter is to hunt down its annihilation products. A goal of the next generation of neutrino telescopes is to find, or better constrain, dark matter by looking for a neutrino flux from dark matter annihilation in the Sun and the Earth. Signals from both sources depend not only on the details of the dark matter model, but on the dynamics of dark matter...
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  61. 4. Particle Dark Matter in the galactic halo: results from DAMA/LIBRA
    Dr Riccardo Cerulli (INFN-LNGS)
    11/03/2009 18:45
    The highly radiopure DAMA/LIBRA set-up (about 250 kg highly radiopure NaI(Tl) sensitive mass) is running at the Gran Sasso National Laboratory of the I.N.F.N..The presented results have been obtained - with an exposure of 0.53 ton x yr - by exploiting the model independent annual modulation signature for Dark Matter particles in the galactic halo. The DAMA/LIBRA data confirm the evidence...
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  62. 30. Dark matter in view of recent experiments
    Mlle Kathryn Zurek (FNAL, USA)
    11/03/2009 19:05
    Recent results from direct and indirect detection of dark matter experiments may be giving early clues to the nature of the dark matter. I review these results and discuss the implications for models of electroweak scale dark matter.
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  63. 46. SU(5) and A(4)
    Dr Alfredo Urbano (Department of Physics and INFN, University of Salento)
    11/03/2009 19:25
    We consider the possibility to take into account the role of the discrete A(4) flavor group into a context of unification obtained through the SU(5) gauge symmetry. Our attention is dedicated to the possibility to preserve the renormalizability of the entire theory avoiding the presence of higher order operators, without forsaking to the usual elegance trough which A(4) can sketch out the...
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  64. 52. SUSY searches in Leptonic Final States with CMS
    M. Niklas Mohr (RWTH Aachen)
    11/03/2009 19:33
    Within the mSUGRA model, the observability of the decay of the next to lightest neutralino into leptons has been studied using a full simulation of the CMS detector. The final state signature consists of two opposite sign leptons, several hard jets and missing transverse energy. The expected precision of the measurement of the dileptonic mass edge is reported for 1~fb$^{-1}$ of data, including...
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  65. 98. Higgs in two photons
    M. Jean-François MARCHAND (LAPP)
    11/03/2009 19:41
  66. 41. SUSY Gauge Singlets and Dualities
    M. James Barnard (University of Durham)
    11/03/2009 19:49
    By including gauge singlets in supersymmetric gauge theories, we have been able to construct and test new types of duality which may help in finding dual theories for supersymmetric GUTs.
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  67. 12. TGC Limits and Search for Resonances in WZ Final State
    Mlle Ketino Kaadze (Kansas State University)
    11/03/2009 19:57
    Studies of the WZ production at the LHC allows testing the standard model of electroweak interactions by measuring triple gauge boson couplings. Any deviation of the strength of these couplings would manifest new physics. We present the status report of the preparation for the WZ cross section and TGC measurement with CMS detector and its potential in search for new physics with WZ final state.
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  68. 31. Particle production in an early supersymmetric universe
    Mme Anna Kaminska (University of Warsaw, Institute of Theoretical Physics)
    11/03/2009 20:05
    The mechanism of preheating in supersymmetric models of inflation will be introduced in context of existence of flat directions. Flat directions, a typical feature of supersymmetric models, can acquire large vacuum expectation values (VEVs) during inflation. A recent discussion about the impact of such large VEVs on the process of non-perturbative particle production will be presented,...
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  69. 48. CAST results and Axion Review
    Dr Theodoros Geralis (NCSR Demokritos)
    12/03/2009 08:30
    Axions have been invented to accommodate the vanishingly small CP Violation in the strong interactions, probed mainly by the stringent limits on the neutron electric dipole moment. Additionally, their discovery may offer a solution to the so much wanted Cold Dark Matter constituent. CAST, the CERN Axion Solar Telescope, searched for axions with masses up to ~0.02eV and improved the axion to...
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  70. 38. High energy gamma rays observations with the Fermi gamma-ray Telescope
    Prof. nicola giglietto (dipartimento di fisica università e politecnico bari - infn bari)
    12/03/2009 08:50
    The Fermi Gamma-ray Space Telescope, formerly called GLAST, is a mission to measure the cosmic gamma-ray flux in the energy range 20 MeV to >300 GeV, with supporting measurements for gamma-ray bursts from 8 keV to 30 MeV. In addition to breakthrough capabilities in energy coverage and localization, the very large field of view enables observations of 20% of the sky at any instant, and the...
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  71. 63. Less-dimensions and the origin of Dark Matter
    Dr Martti Raidal (NICPB)
    12/03/2009 09:10
    The origin and the nature of Dark Matter cannot be addressed in the context of Standard Model. If the topology of the Universe is based on 2 flat +1 compact space dimension, constraints on the number of particles and on their quantum numbers occur from the requirement of gauge invariance in the 3-dimensional subspace. This scenario, called less-dimensions, suggests the GUT group of...
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  72. 3. Results from the Pierre Auger Observatory
    Dr Lorenzo Perrone (Universita' del Salento and INFN Lecce)
    12/03/2009 09:30
    The Pierre Auger Cosmic Ray Observatory has been designed to investigate the origin and the nature of Ultra High Energy Cosmic Rays using a hybrid detection technique. It consists of a surface array overlooked by air fluorescence telescopes which together provide a powerful instrument for air shower reconstruction. The southern part of the Auger Observatory is taking data smoothly since...
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  73. 20. UHECR Source correlations and the Auger analysis
    Michael Kachelriess (Department of Physics, NTNU)
    12/03/2009 09:55
    The Pierre Auger collaboration announced evidence for a correlation of the arrival directions of ultrahigh energy cosmic rays with active galactic nuclei. I discuss this analysis as well as possible tests with neutrino and gamma observations.
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  74. 29. Status and first results of the ANTARES neutrino telescope
    Mlle Giada Carminati (University and INFN Bologna)
    12/03/2009 10:30
    The ANTARES (Astronomy with a Neutrino Telescope and Abyss enviromental RESearch) Collaboration constructed and deployed the world's largest operational underwater neutrino telescope, optimised for the detection of Cherenkov light produced by neutrino-induced muons. The detector has an effective area of the order of 0.1 square km and it is a first step towards a kilometric scale...
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  75. 23. Latest Results from the IceCube Neutrino Observatory
    Dr Carsten Rott (Ohio State University)
    12/03/2009 10:50
    Nearly a century after the discovery of cosmic rays their sources remain a mystery. The study of neutrinos along with other cosmic messengers is vital for ultimately identifying the sources of cosmic rays and understanding the nature of the underlying acceleration mechanisms. Neutrinos are especially important as they propagate nearly unperturbed through the universe and point back to their...
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  76. 34. Final Results from the HiRes Experiment/Telescope Array Status
    Prof. Pierre Sokolsky (University of Utah)
    12/03/2009 11:10
    Final results on the cosmic ray spectrum, composition and anisotropy from the HiRes air-fluorescence experiment will be presented. Results on the ankle and GZK cutoff using both monocular and stereo data, cosmic ray composition using the Xmax method, and searches for correlation of the highest energy cosmic rays with putative sources such as AGN's an BL-Lacs will be given. A description of the...
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  77. 53. Scalar Dark Matter and DAMA
    Mlle Sarah Andreas (Institut für Theoretische Physik E, RWTH Aachen University, D-52056 Aachen)
    12/03/2009 17:00
    A light scalar WIMP is studied in view of the recent results of the DAMA collaboration. In a scenario where both the WIMP's annihilation and its elastic scattering on nuclei occur dominantly through Higgs exchange, a one-to-one relation between the WIMP’s relic density and its spin-independent direct detection rate is established. The ratio of the relevant cross sections depends only on the...
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  78. 25. Direct determination of neutrino mass parameters at future colliders
    Dr Mario Kadastik (NICPB)
    12/03/2009 17:08
    We investigate in the framework of type-II see-saw mechanism the relationships between the neutrino parameters and the Higgs triplet. The mass matrix of the neutrinos is directly related to the branching ratios of the doubly charged component of the triplet allowing an insight to the neutrino parameters by measuring the branching ratios to leptons. We derive relevant analytic results to tell...
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  79. 32. Measurement of the relative fraction of the gluon-gluon fusion in top-antitop production process at 1.96 TeV proton-antiproton collisions using CDF
    M. Naoki Kimura (University of Tsukuba)
    12/03/2009 17:16
    We present the measurement of the relative fraction of the subprocess where the initial states are gluon-gluon pairs or quark-antiquark pairs in top-antitop production at 1.96 TeV proton-antiproton collisions. We identify and reconstruct the signal using events which include two high-momentum leptons, and we distinguish the two subproceses by utilizing the correlated spin states of top and...
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  80. 100. Measurement of topquark mass
    M. Paul Lujan (Lawrence Berkeley National Laboratory Berkeley - CA USA)
    12/03/2009 17:24
  81. 101. Is antigravity possible?
    M. Michael Bebronne (Université Libre de Bruxelles Brussels Belgium)
    12/03/2009 17:32
  82. 59. Electromagnetic Leptogenesis
    Dr Boris Kayser (Fermilab)
    12/03/2009 17:40
    After briefly reviewing standard leptogenesis, we describe a new scenario, electromagnetic leptogenesis, that can fully explain the baryon-antibaryon asymmetry of the universe, just as standard leptogenesis can. Electromagnetic leptogenesis is driven by CP violation in the decays of heavy Majorana neutrinos to three-body final states that contain, in addition to the particles in standard...
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  83. 27. Results of Cuoricino and review of neutrinoless double beta searches
    Prof. Fernando Ferroni (Sapienza Universita di Roma & INFN)
    12/03/2009 18:05
    Status of DBD searches will be reviewed with particular emphasis on the experiments being prepared now with the goal of taking data in the next couple of year. Cuoricino, the succesfull demonstrator of the bolometric technique, has been stopped for making place to preparatiom of CUORE. The (almost) final results will be presented.
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  84. 102. Can LHC disprove leptogenesis?
    M. gilles vertongen (ULB - Service de Physique Théorique)
    12/03/2009 18:45
  85. 103. Higgs dependent leptogenesis
    M. Yuji Kajiyama (National Institute of Chemical Physics and Biophysics)
    12/03/2009 19:05
  86. 14. Instability in coupled dark sectors
    Mlle Laura Lopez Honorez (Universidad Autonoma de Madrid)
    13/03/2009 08:30
    In my talk, I will present our recent work on Coupled Dark matter-Dark energy model. I will show the results of our analysis of background and first order perturbation evolution equations. In particular, I will clarify the origin of early time non-adiabatic large scales instabilities, and point out a viable class of model in which the interaction in directly proportional to the dark...
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  87. 104. MiniBoone (fermilab neutrino oscillations)
    Dr Zelimir Djurcic (Columbia University)
    13/03/2009 08:50
  88. 54. Initial Results from Electron-Neutrino Appearance in MINOS
    Dr Mayly Sanchez (Argonne National Laboratory)
    13/03/2009 09:10
    MINOS is a long baseline neutrino oscillation experiment designed to make precision measurements of the neutrino mixing parameters associated with the atmospheric neutrino mass splitting. Using a neutrino beam from the Main Injector (NuMI) facility at Fermilab, it compares the neutrino energy spectrum for charged current muon neutrino interactions observed in two large detectors located at...
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  89. 2. The OPERA experiment
    Natalia Di Marco (L'Aquila University & INFN)
    13/03/2009 09:35
    The OPERA experiment aims at measuring the numu->nutau oscillation through the nutau appearance in an almost pure numu beam produced at CERN SPS, 730 Km far from the detector. The nutau appearance signal is detected through the measurement of the decay daughter particles of the tau lepton produced in CC nutau interaction. Since the short-lived tau particle owns, at the energy of the beam,...
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  90. 37. Non Standard Neutrino Interactions
    M. Daniel Hernández (Universidad Autónoma de Madrid, Theoretical Physics Department)
    13/03/2009 10:10
    I tackle non standard neutrino interactions (NSIs) from the perspective of effective field theories. A general overview of the theoretical aspects of the subject will be given along with current experimental bounds. Our recent work on the constraints implied by the Standard Model gauge symmetries, along with some examples of possible gauge invariant NSI models, is provided.
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  91. 105. SciBoone
    Dr Hide-Kazu TANAKA (Columbia University)
    13/03/2009 10:30
  92. 109. Tevatron SM Higgs Combined Result (low and high mass regions)
    Doug Benjamin (Duke University), M. Yuji Enari (LPNHE, Paris, France)
    13/03/2009 11:30
  93. 7. Neutrino data and implications for theta_13
    Dr Antonio Palazzo (IFIC, CSIC/University of Valencia)
    13/03/2009 17:00
    Pinning down the unknown neutrino mixing angle theta_13 is one of the most important goals in particle physics in connection with future investigation on CP violation in the leptonic sector. In this context, I shall present the results of an updated global analysis of neutrino oscillation data, focusing on this puzzling parameter. I shall discuss two independent and converging hints of...
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  94. 24. Search for nucleon decay in Super-Kamiokande
    Dr Makoto Miura (Kamioka observatory, ICRR, University of Tokyo)
    13/03/2009 17:20
    The standard model has been successful in accounting for many experimental results. However, the standard model has unanswered questions: why there are so many parameters? Various attempts have been made to resolve the shortcomings by unifying the electroweak and the strong interactions in the context of Grand Unified Theory (GUT). One of the generic predictions of GUTs is the instability of...
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  95. 45. To Measure Theta_13: The Daya Bay Reactor Neutrino Experiment
    Philip Rubin (George Mason University)
    13/03/2009 17:40
    By determining the disappearance rate of anti-neutrinos emitted from the Daya Bay and Ling Ao nuclear power plants in Southeast China, the Daya Bay Reactor Neutrino Experiment will achieve a 1% sensitivity to sin(2*theta_13). The current best limit, by Chooz, is 17%. Beginning three years of data taking in 2011, Daya Bay will be the most precise of the new generation of experiments intended...
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  96. 51. Status report on Double Chooz
    Dr Amanda Porta (CEA Saclay)
    13/03/2009 17:55
    Double Chooz main target is to measure the Theta13 oscillation parameter by comparing the reactor neutrino fluxes in two identical detectors located respectively at 400 m and 1 km away from the 2 Chooz reactor cores. The detector target consists of 10 m3 of Gd-doped liquid scintillator surrounded by a 55 cm-thick g-catcher of non-loaded liquid scintillator. This central part is observed by...
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  97. 6. Reconciling dark matter and neutrino masses in mSUGRA
    Mme Chiara Arina (Universite Libre de Bruxelles)
    13/03/2009 18:10
    We study the minimal SUGRA phenomenology in the case of an alternative seesaw mechanism for generating neutrino masses. Changes in the neutrino sector lead to a modification of the supersymmetric particle spectrum and the sneutrino naturally arises as the lightest supersymmetric particle. The obtained sneutrino has a relic density within the WMAP range and is compatible with present...
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  98. 8. Collective flavor transitions of supernova neutrinos
    Mme Irene Tamborra (Department of Physics, University of Bari & INFN, Bari)
    13/03/2009 18:45
    When the neutrino density is very high, as in core-collapse supernovae, neutrino-neutrino interactions are not negligible and can appreciably influence the evolution of flavor. The physics of these phenomena is briefly highlighted, and their effects are shown on observable energy spectra from a future galactic supernova. Detection of such effects could provide a handle on two unknowns: the...
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  99. 57. Current Kamland Results
    Lindley Winslow (Massachusetts Institute of Technology)
    13/03/2009 19:05
    KamLAND is a one-kiloton liquid scintillating detector located in the Kamioka Mine in Kamioka, Japan. KamLAND measurements have shown evidence for neutrino oscillation in reactor anti-neutrinos and indications of geological produced anti-neutrinos. The first phase of KamLAND acquired almost 1500 days of data. An analysis of this full data set with improvements in calibration and the...
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  100. 36. Neutrino dipole moments and solar experiments
    Dr Marco Picariello (Università del salento)
    13/03/2009 19:25
    We investigate the resonant spin flavour conversion of solar neutrinos to sterile ones, a mechanism which is added to the well known LMA one. We show that the data from all solar neutrino experiments except Borexino exhibit a clear preference for a sizable magnetic field. We argue that the solar neutrino experiments are capable of tracing the possible modulation of the solar magnetic field....
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  101. 64. Results from the Borexino experiment
    M. Timo Lewke (Borexino/ Technische Universität München)
    13/03/2009 19:45
    Borexino is a low threshold liquid-scintillator detector for solar neutrinos located in the LNGS underground laboratory, Italy. Because of the ultra-high radio purity it is the first experiment able to do a real time analysis of the low energetic solar neutrinos. A detection of the solar ⁷Be neutrinos with a rate of 47+-7 counts/day/100tons was reported (192 days of live time measurement). ⁸B...
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  102. 107. Theory Summary
    M. Mariano Quiros (IFAE Barcelona Spain)
    14/03/2009 09:00
  103. 108. Experimental Summary
    M. Abolhassan Jawahery (University of Maryland College Park - MD USA)
    14/03/2009 09:45
  104. 99. First FERMI results
    Prof. nicola giglietto (dipartimento di fisica università e politecnico bari - infn bari)
  105. 75. Low mass SM Higgs (Tevatron)
    M. Nicola de Filippis (LLR - École Polytechnique, Palaiseau, France)
  106. 96. Pamela and Attic: an astrophysicist's view
    Prof. Tsvi Piran (Racah Institute for Physics Hebrew University Jerusalem Israel)