0000000000035232

AUTHOR

D. Co^té

showing 6 related works from this author

Search for new phenomena in the WW→lνl′ν′ final state in pp collisions at s=7TeV with the ATLAS detector

2013

This Letter reports a search for a heavy particle that decays to WW using events produced in pp collisions at root s = 7 TeV. The data were recorded in 2011 by the ATLAS detector and correspond to an integrated luminosity of 4.7 fb(-1). WW -> lvl'v' (l,l' = e or mu) final states are considered and the distribution of the transverse mass of the W W candidates is found to be consistent with Standard Model expectations. Upper limits on the production cross section times branching ratio into W boson pairs are set for Randall-Sundrum and bulk Randall-Sundrum gravitons, which result in observed 95% CL lower limits on the masses of the two particles of 1.23 TeV and 0.84 TeV, respectively.

PhysicsPhysics::General PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderLuminosity (scattering theory)010308 nuclear & particles physicsBranching fractionTechnicolor01 natural sciencesEngineering physicsStandard Modelmedicine.anatomical_structureAtlas (anatomy)Randall–Sundrum model0103 physical sciencesmedicineTransverse massHigh Energy Physics::Experiment010306 general physicsPhysics Letters B
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Search for heavy vector-like quarks coupling to light quarks in proton–proton collisions at s=7 TeV with the ATLAS detector

2012

This letter presents a search for singly produced vector-like quarks, Q, coupling to light quarks, q. The search is sensitive to both charged current (CC) and neutral current (NC) processes, p p --> Q q --> W q q' and p p --> Q q --> Z q q' with a leptonic decay of the vector gauge boson. In 1.04/fb of data taken in 2011 by the ATLAS experiment at a center-of-mass energy sqrt(s) = 7 TeV, no evidence of such heavy vector-like quarks is observed above the expected Standard Model background. Limits on the heavy vector-like quark production cross section times branching ratio as a function of mass m_Q are obtained. For a coupling kappa_(qQ) = v/m_Q, where v is the Higgs vacuum expectation value…

PhysicsQuarkNuclear and High Energy PhysicsGauge bosonParticle physicsNeutral current010308 nuclear & particles physicsBranching fractionHigh Energy Physics::LatticeHigh Energy Physics::PhenomenologyATLAS experiment01 natural sciencesNuclear physics0103 physical sciencesHiggs bosonHigh Energy Physics::Experiment010306 general physicsCharged currentVacuum expectation valuePhysics Letters B
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Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at s=7 TeV

2012

The results of a search for pair production of the lighter scalar partners of top quarks () in 2.05 fb−1 of pp collisions at TeV using the ATLAS experiment at the LHC are reported. Scalar top quar ...

QuarkPhysicsNuclear and High Energy PhysicsTop quarkParticle physicsLarge Hadron ColliderPhysics::Instrumentation and Detectors010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyATLAS experimentScalar (physics)Supersymmetry01 natural sciencesComputer Science::Computers and SocietyNuclear physicsNonlinear Sciences::Exactly Solvable and Integrable SystemsPionPair production0103 physical sciencesPhysics::Atomic and Molecular Clusters010306 general physicsPhysics Letters B
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Search for new particles decaying to ZZ using final states with leptons and jets with the ATLAS detector in s=7 TeV proton–proton collisions

2012

A search is presented for a narrow resonance decaying to a pair of Z bosons using data corresponding to 1.02 fb(-1) of integrated luminosity collected by the ATLAS experiment from pp collisions at ...

PhysicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physicsAtlas (topology)Atlas detectorATLAS experimentGraviton01 natural sciencesNuclear physicsRandall–Sundrum model0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsBosonLeptonPhysics Letters B
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Measurement of the WW cross section in s=7 TeV pp collisions with the ATLAS detector and limits on anomalous gauge couplings

2012

This Letter reports a measurement of the W W production cross section in root s = 7 TeV pp collisions using data corresponding to an integrated luminosity of 1.02 fb(-1) collected with the ATLAS de ...

PhysicsNuclear and High Energy PhysicsParticle physicsLuminosity (scattering theory)010308 nuclear & particles physicsAtlas detectorAstrophysics::High Energy Astrophysical PhenomenaGauge (firearms)01 natural sciencesNuclear physicsCross section (physics)medicine.anatomical_structureAtlas (anatomy)0103 physical sciencesmedicinePhysics::Accelerator PhysicsHigh Energy Physics::Experiment010306 general physicsPhysics Letters B
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Search for contact interactions in dilepton events from pp collisions at s=7 TeV with the ATLAS detector

2012

This Letter presents a search for contact interactions in the dielectron and dimuon channels using data from proton-proton collisions produced by the LHC at,root s = 7 TeV and recorded by the ATLAS ...

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderPhysics::Instrumentation and Detectors010308 nuclear & particles physicsAtlas (topology)Atlas detectorNuclear Theory01 natural sciencesNuclear physics0103 physical sciencesPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsPhysics Letters B
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