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Search: (WFRF:(Strandberg A.)) pers:(Abazov V. M.) > (2005) > Measurement of the ...

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

Abazov, V. M. (author)
Åsman, Barbro (author)
Clément, Christophe (author)
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Strandberg, Jonas (author)
Zylberstejn, A. (author)
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2005
2005
English.
In: Physical Review Letters. - 0031-9007 .- 1079-7114. ; 94:4, s. 042001-
  • Journal article (peer-reviewed)
Abstract Subject headings
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  • 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).

Subject headings

NATURVETENSKAP  -- Fysik (hsv//swe)
NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

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