0000000000251672

AUTHOR

Silke Nelson

showing 2 related works from this author

Search for an excess of events with an identical flavour lepton pair and significant missing transverse momentum in root s=7 TeV proton-proton collis…

2011

Results are presented of a search for supersymmetric particles decaying into final states with significant missing transverse momentum and exactly two identical flavour leptons (e or mu) of opposite charge in sqrt{s}=7 TeV collisions at the Large Hadron Collider. This channel is particularly sensitive to supersymmetric particle cascade decays producing flavour correlated lepton pairs. Flavour uncorrelated backgrounds are subtracted using a sample of opposite flavour lepton pair events. Observation of an excess beyond Standard Model expectations following this subtraction procedure would offer one of the best routes to measuring the masses of supersymmetric particles. In a data sample corres…

Particle physicsPhysics and Astronomy (miscellaneous)Physics beyond the Standard ModelFlavourSupergauge TransformationsFOS: Physical sciencesddc:500.2Parameter space01 natural sciences530Settore FIS/04 - Fisica Nucleare e SubnucleareHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)Pionsparticle: cascade decay ; sparticle: search for ; electron: pair production ; muon: pair production ; p p: inelastic scattering ; transverse momentum: missing-energy ; supersymmetry: parameter space ; CERN LHC Coll ; new physics ; ATLAS ; dilepton: mass spectrum ; experimental results ; 7000 GeV-cmsPions0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]FysikHigh Energy Physics010306 general physicsEngineering (miscellaneous)PhysicsLarge Hadron ColliderScience & TechnologyATLAS detector010308 nuclear & particles physicsSettore FIS/01 - Fisica SperimentaleHigh Energy Physics::PhenomenologyATLASGeneratorsCascadeTransverse momentumPhysical SciencesExperimental High Energy PhysicsComputingMethodologies_DOCUMENTANDTEXTPROCESSINGFísica nuclearHigh Energy Physics::ExperimentLHCParticle Physics - ExperimentLeptonModel
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Limits on tau lepton-flavor violating decays into three charged leptons

2010

A search for the neutrinoless, lepton-flavor violating decay of the tau lepton into three charged leptons has been performed using an integrated luminosity of 468 fb(-1) collected with the BABAR detector at the PEP-II collider. In all six decay modes considered, the numbers of events found in data are compatible with the background expectations. Upper limits on the branching fractions are set in the range (1.8-3.3) x 10(-8) at 90% confidence level.

Nuclear and High Energy PhysicsParticle physicsElectron–positron annihilationBABARFOS: Physical sciencesElementary particletau: branching ratioelectron positron: annihilationmeson01 natural sciencesPARTICLE PHYSICS; PEP2; BABARHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)Particle decaytau: leptonic decay; lepton: flavor: violation; tau: branching ratio; BaBar; background; SLAC PEP Stor; electron positron: annihilation; tau: pair production; final state: (0neutrino); upper limit; tau- --> lepton+ 2lepton-; 10.54: 10.58 GeV-cms quark: angular momentum; positron electron --> quark antiquark; excited state; mesonexcited state0103 physical sciencesPEP2[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]10.54: 10.58 GeV-cms quark: angular momentumpositron electron --> quark antiquark010306 general physicsfinal state: (0neutrino)PACS: 13.35.DxFlavorPhysicstau- --> lepton+ 2lepton-tau: pair productionlepton flavor violationbackground010308 nuclear & particles physicsQuark modelHigh Energy Physics::Phenomenologylepton: flavor: violationParticle physicsFermionBABAR detectorSLAC PEP StorHEPCharged particletau: leptonic decayPARTICLE PHYSICSHigh Energy Physics::ExperimentFísica de partículesExperimentsupper limitLeptonPhysical Review D
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