0000000000587176

AUTHOR

E Ben Haim

showing 2 related works from this author

Improved limits on the lepton-flavor violating decays tau(-) -> l(-)l(+)l(-)

2007

A search for the neutrinoless, lepton-flavor violating decay of the tau lepton into three charged leptons has been performed using 376fb-1 of data collected at an e+e- center-of-mass energy around 10.58 GeV with the BABAR detector at the SLAC PEP-II storage rings. 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 (4-8)×10-8 at 90% confidence level. © 2007 The American Physical Society.

Particle physicsVIOLATIONMesonElectron–positron annihilationCharged particleGeneral Physics and AstronomyElectron01 natural sciencesNuclear physicsParticle decaySEARCH; LEPTON; FLAVOR; VIOLATION; BABAR; SLACPositronSEARCH0103 physical sciencesFree energyLEPTON010306 general physicsPhysicsVolume fractionMuon010308 nuclear & particles physicsBranching fractionHigh Energy Physics::PhenomenologyParticle physicsBABAR detectorLepton flavorCharged leptonHEPGermanium compoundBaBarHigh Energy Physics::ExperimentParticle detectorSLACFísica de partículesExperimentsFLAVORLepton
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Measurement of the semileptonic branching fraction of the B_{s} meson

2012

We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BaBar detector in the center-of-mass (CM) energy region above the Upsilon(4S) resonance. We use the inclusive yield of phi mesons and the phi yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B_s mesons relative to all B mesons as a function of CM energy. The inclusive semileptonic branching fraction of the B_s meson is determined to be B(B_s to l nu X)=9.5 (+2.5/-2.0)(stat)(+1.1/-1.9)(syst)%, where l indicates the average of e and mu.

Nuclear and High Energy PhysicsParticle physicssemileptonic branching fractionMesonHigh Energy Physics::Latticesemileptonic branching fraction B_s mesonFOS: Physical sciences01 natural sciencesResonance (particle physics)semileptonic Bs-meson decaysHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Mesons (Nuclear physics)B mesonSDG 7 - Affordable and Clean EnergyMesons (Física nuclear)010306 general physicsNuclear Experiment14.40.Nd 13.20.HePhysics/dk/atira/pure/sustainabledevelopmentgoals/affordable_and_clean_energy010308 nuclear & particles physicsBranching fractionLeptons (Física nuclear)High Energy Physics::PhenomenologyBABAR detectorbranching fraction measurementHEPPACS: 14.40.Nd 13.20.HeBaBar detector at SLAC; semileptonic Bs-meson decays; branching fraction measurementLeptons (Nuclear physics)Yield (chemistry)BaBarB_s mesonHigh Energy Physics::ExperimentBaBar detector at SLACsemileptonic Bs-meson decayLeptonProduction rate
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