6533b870fe1ef96bd12d05b7
RESEARCH PRODUCT
Measurement of the B hadron lifetime
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PhysicsNuclear and High Energy PhysicsParticle physicsMesonElectron–positron annihilationHigh Energy Physics::PhenomenologyHadronElementary particleNuclear physicsHigh Energy Physics::ExperimentB mesonImpact parameterNuclear ExperimentALEPH experimentParticle Physics - ExperimentLeptondescription
The average lifetime of B hadrons has been measured by the ALEPH experiment at LEP. Events containing B hadrons are selected by the identification of leptons with high transverse momentum in hadronic Z decays, and the lifetime is extracted from a fit to the impact parameter distribution of the lepton tracks. From a sample of 1.7×105 hadronic Z decays a lifetime of 1.29±0.06±0.10 ps is measured.
year | journal | country | edition | language |
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1991-01-01 | Physics Letters B |