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Measurement of the B-s(0) lifetime in the exclusive decay channel B-s(0)-> J/psi phi
Baringer, Philip S. Bean, Alice Christofek, L. Coppage, Don Gardner, J. Hebert, C. Hensel, Carsten Jabeen, S. Wilson, Graham Wallace
Baringer, Philip S.
Bean, Alice
Christofek, L.
Coppage, Don
Gardner, J.
Hebert, C.
Hensel, Carsten
Jabeen, S.
Wilson, Graham Wallace
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Abstract
Using the exclusive decay B-s(0)-->J/psi(mu(+)mu(-))phi(K+K-), we report the most precise single measurement of the B-s(0) lifetime. The data sample corresponds to an integrated luminosity of approximately 220 pb(-1) collected with the D0 detector at the Fermilab Tevatron Collider in 2002-2004. We reconstruct 337 signal candidates, from which we extract the B-s(0) lifetime, tau(B-s(0))=1.444(-0.090)(+0.098)(stat)+/-0.020(sys) ps. We also report a measurement for the lifetime of the B-0 meson using the exclusive decay B-0-->J/psi(mu(+)mu(-))K-*0(892)(K(+)pi(-)). We reconstruct 1370 signal candidates, obtaining tau(B-0)=1.473(-0.050)(+0.052)(stat)+/-0.023(sys) ps, and the ratio of lifetimes, tau(B-s(0))/tau(B-0)=0.980(-0.071)(+0.076)(stat)+/-0.003(sys).
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2005-02
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AMERICAN PHYSICAL SOC
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Abazov, VM; Abbott, B, et al. Measurement of the B-s(0) lifetime in the exclusive decay channel B-s(0)-> J/psi phi. PHYSICAL REVIEW LETTERS. February 2005. 94(4)