The lifetime of Λ0 b is measured using the semileptonic decay Λ0 b → Λ+ cℓ−ν−, where the Λ+ c is reconstructed through its decay Λ+ c → pK− π+. The data were collected by the CDF detector at the Tevatron Collider during 1992–1995 and correspond to an integrated luminosity of 110pb−1 of pp collisions at √s = 1.8 TeV. From a fit to the decay length distribution of the Λc-lepton system from 197 ± 25 signal events, the lifetime of Λ0 b is measured to be 1.32 ± 0.15 ± 0.07 ps.
All Science Journal Classification (ASJC) codes
- General Physics and Astronomy