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Phys. Rev. Lett. 77, 1945–1949 (1996)

Measurement of the Lifetime of the Bs0 Meson Using the Exclusive Decay Mode Bs0 → J/ψ φ

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F. Abe et al. (CDF Collaboration)
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Received 1 May 1996; published in the issue dated 2 September 1996

The lifetime of the Bs0 meson is measured using the exclusive decay mode Bs0J/ψφ, where J/ψμ+μ- and φK+K-. The data sample consists of 110 pb-1 of pp̅ collisions at s = 1.8 TeV, collected by the CDF detector at the Fermilab Tevatron collider during 1992–1995. We find 58±12 signal events, and the Bs0 meson lifetime is determined to be τBs0 = 1.34-0.19+0.23(stat)±0.05(syst) ps. This result is consistent with previous measurements of the Bs0, B+, and Bd0 meson lifetimes and with theoretical predictions.

© 1996 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.77.1945
DOI:
10.1103/PhysRevLett.77.1945
PACS:
14.40.Nd, 13.25.Hw