Measurement of the {ital B}{sub {ital s}} meson lifetime
Journal Article
·
· Physical Review Letters
The lifetime of the {ital B}{sub {ital s}} meson is measured using the semileptonic decay {ital B}{sub {ital s}}{r_arrow}{ital D}{sub {ital s}}{sup {minus}}l{sup +}{nu}{ital X}. The data sample consists of 19.3 pb{sup {minus}1} of {ital p{bar p}} collisions at {radical}{ital s}=1.8 TeV collected by the Collider Detector at Fermilab during 1992--1993. There are 76{plus_minus}8 l{sup +}{ital D}{sub {ital s}}{sup {minus}} signal events where the {ital D}{sub {ital s}} is identified via the decay {ital D}{sub {ital s}}{sup {minus}}{r_arrow}{phi}{pi}{sup {minus}}, {phi}{r_arrow}{ital K}{sup +}{ital K}{sup {minus}}. Using these events, the {ital B}{sub {ital s}} meson lifetime is determined to be {tau}{sub {ital s}}=1.42{sub {minus}0.23}{sup +0.27}(stat){plus_minus}0.11(syst) ps. A measurement of the {ital B}{sub {ital s}} lifetime in a low statistics sample of exclusive {ital B}{sub {ital s}}{r_arrow}{ital J}/{psi}{phi} decays is also presented in this paper.
- OSTI ID:
- 82219
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 74; ISSN 0031-9007; ISSN PRLTAO
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:124814
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Sun Sep 01 00:00:00 EDT 1996
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OSTI ID:383276