A Precise measurement of the average b hadron lifetime

Buskulic, D. and Finch, Alexander (1996) A Precise measurement of the average b hadron lifetime. Physics Letters B, 369 (2). pp. 151-162. ISSN 0370-2693

Abstract

An improved measurement of the average b hadron lifetime is performed using a sample of 1.5 million hadronic Z decays, collected during the 1991–1993 runs of ALEPH, with the silicon vertex detector fully operational. This uses the three-dimensional impact parameter distribution of lepton tracks coming from semileptonic b decays and yields an average b hadron lifetime of 1.533 ± 0.013 ± 0.022 ps.