Description
Young Scientist Forum
M.
Sebastian Wandernoth
(Heidelberg University)
03/03/2013 19:45
Experiment
YSF (Young Scientists Forum)
Alvaro Dosil
(Univ. Santiago de Compostela)
03/03/2013 19:53
Experiment
YSF (Young Scientists Forum)
Cedric Weiland
(LPT Orsay)
03/03/2013 20:01
Theory
YSF (Young Scientists Forum)
In the Standard Model minimally extended by sterile neutrinos, modified W-l-nu couplings arise and induce a tree-level enhancement to lepton flavour universality violation in light mesons. Indeed the additional mixing between the active neutrinos and the sterile ones can generate deviations from unitarity in the leptonic mixing matrix for charged currents. We recently reconsidered this idea in...
Filippo Sala
(Scuola Normale Superiore and INFN, Pisa)
03/03/2013 20:09
Theory
YSF (Young Scientists Forum)
The approximate U(2)^3 symmetry exhibited by the quark sector of the Standard Model, broken in specific directions dictated by minimality (Minimal U(2)^3), can explain the current success of the CKM picture of flavour and CP violation while allowing for large deviations from it at foreseen experiments. The embedding of this symmetry in specific models leaves space to satisfy collider and...
M.
Yun Jiang
(UC Davis)
04/03/2013 19:30
Theory
YSF (Young Scientists Forum)
The current Higgs boson data at 125 GeV state appears to exhibit a substantial excess in the di-photon final state, whereas a more or less SM-like rate is observed in the ZZ decaying to four lepton channel. Beyond the SM, the two-Higgs-doublet model (2HDM) containing a second Higgs doublet is one of the simplest extensions. We examine the maximum Higgs signal enhancements that can be achieved...
Mme
Michelle Prewitt
(Rice University)
04/03/2013 19:38
Experiment
YSF (Young Scientists Forum)
An updated on the search for the rare decay $B_s^0 \to \mu^+ \mu^-$
using data collected by the D0 detector at the Fermilab Tevatron collider. This analysis covers the full Run II data set, corresponding to approximately 10.4 fb$^{-1}$ of integrated luminosity in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV.
Takuya Kakuda
(Niigata University)
04/03/2013 19:46
Theory
YSF (Young Scientists Forum)
M.
António Figueiredo
(CFTP / IST-ID & LPC Clermont)
04/03/2013 19:54
Theory
YSF (Young Scientists Forum)
In addition to explaining neutrino masses and mixings (neutral lepton flavour violation - LFV), some mechanisms of neutrino mass generation can also give rise to potentially observable LFV in the charged lepton sector (cLFV). By focusing on the supersymmetric version of the type-I seesaw mechanism, we address the potential of a Linear Collider operating with polarisable e-plus e-minus as well...
Kathrin Becker
(University of Wuppertal (ATLAS))
04/03/2013 20:02
Experiment
YSF (Young Scientists Forum)
The production of single top quarks at the LHC is dominated by the t-channel exchange of a virtual W boson that is emitted by a light quark inside one of the colliding protons.
Thus, the measurement of the top-quark and top-antiquark production cross sections is sensitive to the u-quark PDF and the d-quark PDF and can provide complementary input to constrain these PDF, complementary to other...
Mme
Saereh Najjari
(University of Warsaw)
04/03/2013 20:10
Theory
YSF (Young Scientists Forum)
The standard model (SM)theory is considered as a low energy approximation of some more fundamental theory. In this theory lepton flavor is conserved. Here we investigate the possibility of charged lepton flavor violation for the decay of $\mu \to e \gamma$ and $\mu \to eee$ in the extended SM, including dimension six.
Margherita Buizza Avanzini
(Laboratoire APC)
05/03/2013 19:25
Experiment
YSF (Young Scientists Forum)
In future decades, AstroParticle and Neutrino Physics programs are going to be combined within a single experiment. This requires the development of techniques, new infrastructures and a new concept of Detector: next years will be the era of Giant (50-600 kt) Multipurpose Detectors. In particular, 45 European Institutions, connecting scientists with industrial support, are involved in the...
Gauthier Durieux
(CP3 − UCLouvain)
05/03/2013 19:33
Theory
YSF (Young Scientists Forum)
While stringent constraints have been obtained at low energies, systematic and direct tests of the baryon and lepton number conservations have not been carried out at the current energy frontier. We observe that the flavour symmetries of the Standard Model gauge sector, broken as they are in the Standard Model Yukawa one, naturally suppress baryon and lepton number violation at low energy and,...
Dr
Pau Novella Garijo
(CIEMAT)
05/03/2013 19:41
Experiment
YSF (Young Scientists Forum)
Among ongoing reactor-based experiments, Double Chooz is unique in obtaining data when the reactor cores are brought down for maintenance. These reactor-off data allow for a clean measurement of the backgrounds of the experiment, thus being of uppermost importance for the theta13 oscillation analysis. While the oscillation results published by the collaboration in 2011 and 2012 rely on...
Mlle
Bogumila Swiezewska
(University of Warsaw)
05/03/2013 19:49
Theory
YSF (Young Scientists Forum)
Loop induced 2-photon decay of the Standard Model (SM)-like scalar boson, being sensitive to the existence of new charged particles, may provide insight into the scalar sector of extensions of the SM as well as some constraints on the parameter space thereof. Motivated by experimental hints on the possibility of deviating from the SM predictions of the 2-photon decay rate of the SM-like scalar...
Vasiliki Kouskoura
(CERN)
08/03/2013 19:30
Experiment
YSF (Young Scientists Forum)
The latest measurement of the SM ZZ production cross section at 8 TeV using data recorded by the ATLAS experiment at the Large Hadron Collider is presented. Events are selected consistent with two Z bosons decaying to electrons or muons. The cross section is measured in the experimental fiducial volume and then used to extract the total ZZ production cross section.
Julien Maurer
(CPPM)
08/03/2013 19:38
Experiment
YSF (Young Scientists Forum)
A search for the production of supersymmetric particles decaying into final states with jets (b-tagged or not), missing transverse momentum and two isolated leptons, e or mu, of the same sign is presented. The analysis uses a data sample collected during 2012, which corresponds to a total integrated luminosity of 21 fb-1 of sqrt{s}= 8 TeV proton-proton collisions recorded with the ATLAS...
Mlle
Ludivine Ceard
(UCLouvain)
08/03/2013 19:46
Experiment
YSF (Young Scientists Forum)
The mechanism of production of heavy-flavoured mesons, in association with vector bosons like Z+b in the Standard Model, is only partially understood. The deep understanding of these processes is furthermore required by Higgs and BSM analysis with similar final states. Using the total 5.2 fb-1 LHC proton-proton collision data collected in 2011 at a centre of mass energy of 7 TeV by the CMS...
Santiago Folgueras
(Universidad de Oviedo (CMS Collaboration))
08/03/2013 19:54
Experiment
YSF (Young Scientists Forum)
Although same sign dileptons final states are very rare in the SM context, they appear naturally in many different new physics scenarios such as SUSY where two same-sign dileptons can be produced in the decay chain of supersymetric particles.
Different scenarios can be presented: Same-sign dileptons accompanied by b-quarks can arise from SUSY processes where 3rd generation quark...
Laurent Thomas
(Université Libre de Bruxelles)
08/03/2013 20:02
Experiment
YSF (Young Scientists Forum)
Several theories beyond the Standard Model (GUT, large extra dimensions, ...) predict the existence of new heavy bosons. Such particles could be produced in significant amounts at the LHC and their decay into a dilpeton pair provides a clean signature with low background. In this talk we plan to present the results of the analysis of the whole 2012 dataset collected by the CMS experiment at a...
Emily Johnson
(Michigan State University)
08/03/2013 20:10
YSF (Young Scientists Forum)
