Updated measurement of the average B hadron lifetime

UNSPECIFIED (1992) Updated measurement of the average B hadron lifetime. Physics Letters B, 295 (1-2). pp. 174-186. ISSN 0370-2693

Abstract

An improved measurement of the average lifetime of b hadrons has been performed with the ALEPH detector. From a sample of 260 000 hadronic Z0 decays, recorded during the 1991 LEP run with the silicon vertex detector fully operational, a fit to the impact parameter distribution of lepton tracks coming from semileptonic decays yields an average b hadron lifetime of 1.49 ± 0.03 ± 0.06 ps.