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Updated measurement of the average B hadron lifetime

Research output: Contribution to journalJournal article

Published

Journal publication date1992
JournalPhysics Letters B
Journal number1-2
Volume295
Number of pages13
Pages174-186
Original languageEnglish

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.