An improved measurement of the BS 0 lifetime

OPAL Collaboration

Research output: Contribution to journalArticlepeer-review

21 Scopus citations


This letter presents an updated measurement of the lifetime of the Bs 0 meson using 3.6 million hadronic Z0 decays recorded by the OPAL detector at LEP from 1990 to 1994. A sample of Bs 0 decays is obtained using Ds -+ combinations, where the Ds - is reconstructed in either the φπ- or K*0K- decay mode. From 79 ± 13 Dxℓ combinations attributed to Bs 0 decays in this data sample, we measure τ(Bs 0) = 1.54-0.21 +0.25 ± 0.06 ps, where the errors are statistical and systematic, respectively.

Original languageEnglish
Pages (from-to)273-282
Number of pages10
JournalPhysics Letters B
Issue number2
StatePublished - 11 May 1995
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics


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