Measurement of the B- and B−0 meson lifetimes using semileptonic decays

CDF Collaboration

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20 Scopus citations


The lifetimes of the B- and B−0 mesons are measured using the partially reconstructed semileptonic decays B→D1-vX, where D is either a D0 or D*+ meson. The data were collected by the CDF detector at the Fermilab Tevatron collider during 1992-1993 and correspond to 19.3 pb−1 of pp collisions at s = 1.8 TeV. We measure the decay length distributions and find the lifetimes to be τ(B) = 1.56±0.13±0.06 ps and τ(B−0) = 1.54±0.08±0.06 ps, and the ratio of lifetimes to be τ(B)/τ(B−0) = 1.01±0.11±0.02, where the first uncertainties are statistical and the second are systematic.

Original languageEnglish (US)
Pages (from-to)4462-4467
Number of pages6
JournalPhysical review letters
Issue number24
StatePublished - 1996

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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