Lifetime of Particles ContainingbQuarks

Abstract

From a sample of hadronic events produced in $e^{+}{e}^{-}$ collisions, semileptonic decays of heavy particles have been isolated and used to obtain a measurement for the bottom-quark lifetime of [1.8±0.6 (stat.)±0.4(syst.)]×${10}^{-12\mathrm{}}$ sec.