0000000000803689

AUTHOR

I. Ledroit

showing 1 related works from this author

A measurement of the \(\tau\) leptonic branching fractions

1995

Abstract: A sample of 25000 Z(0) --> tau(-)tau(+) events collected by the DELPHI experiment at LEP in 1991 and 1992 is used to measure the leptonic branching fractions of the tau lepton. The results are B(tau --> e nu) = (17.51+/-0.39)% and B(tau --> mu nu) = (17.02+/-0.31)%. The ratio of the muon and electron couplings to the weak charged current is measured to be g(mu)/g(e) = 1.000+/-0.013, satisfying e-mu universality. The average leptonic branching fraction corrected to the value for a massless lepton, assuming e-mu universality, is found to be B(tau --> l nu) = (17.50+/-0.25)%.

Nuclear and High Energy PhysicsParticle physicsElectron–positron annihilationElectronComputer Science::Digital Libraries01 natural sciencesPartícules (Física nuclear)Nuclear physics0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]010306 general physicslepton couplingCharged currentDELPHIPhysicsMuon010308 nuclear & particles physicsBranching fractionPhysicsHigh Energy Physics::Phenomenologytau leptonLARGE ELECTRON POSITRON COLLIDERUniversality (dynamical systems)Massless particlePARTICLE PHYSICS; LARGE ELECTRON POSITRON COLLIDER; DELPHIComputer Science::Mathematical SoftwarePARTICLE PHYSICSHigh Energy Physics::ExperimentFísica nuclearParticle Physics - ExperimentDELPHI; tau lepton; lepton couplingLepton
researchProduct