0000000000824215

AUTHOR

Roy F Schwitters

showing 2 related works from this author

Search for a light Higgs boson decaying to two gluons orss¯in the radiative decays ofΥ(1S)

2013

We search for the decay Υ(1S)→γA^0, A^0→gg or ss , where A^0 is the pseudoscalar light Higgs boson predicted by the next-to-minimal supersymmetric Standard Model. We use a sample of (17.6±0.3)×10^6 Υ(1S) mesons produced in the BABAR experiment via e^+e^-→Υ(2S)→π^+π^-Υ(1S). We see no significant signal and set 90%-confidence-level upper limits on the product branching fraction B(Υ(1S)→γA^0)·B(A^0→gg or ss) ranging from 10^(-6) to 10^(-2) for A^0 masses in the range 0.5–9.0  GeV/c^2.

PhysicsNuclear and High Energy PhysicsParticle physicsMeson010308 nuclear & particles physicsBranching fractionElectron–positron annihilationBaBar experimentSupersymmetry01 natural sciencesNuclear physicsPseudoscalar0103 physical sciencesHiggs boson010306 general physicsMinimal Supersymmetric Standard ModelPhysical Review D
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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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