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Measurement of the B-s(0) lifetime in the exclusive decay channel B-s(0)-> J/psi phi

Abazov, VM; Abbott, B; Abolins, M; Acharya, BS; Adams, DL; Adams, M; Adams, T; ... D0 Collaboration, ; + view all (2005) Measurement of the B-s(0) lifetime in the exclusive decay channel B-s(0)-> J/psi phi. PHYS REV LETT , 94 (4) , Article 042001. 10.1103/PhysRevLett.94.042001. Green open access

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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).

Type: Article
Title: Measurement of the B-s(0) lifetime in the exclusive decay channel B-s(0)-> J/psi phi
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.94.042001
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.94.042001
Language: English
Additional information: © 2005 The American Physical Society
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences
UCL > Provost and Vice Provost Offices > School of Life and Medical Sciences > Faculty of Life Sciences > Div of Biosciences > Cell and Developmental Biology
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1374243
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