Measurement of the Λ0 b lifetime using Λ0 b → Λ+ c ν

CDF Collaboration

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Abstract

The lifetime of Λ0 b is measured using the semileptonic decay Λ0 b → Λ+ cν, 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.

Original languageEnglish (US)
Pages (from-to)1439-1443
Number of pages5
JournalPhysical review letters
Volume77
Issue number8
DOIs
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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