Measurement of the Semileptonic Branching Fraction of the B_s Meson

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Measurement of the Semileptonic Branching Fraction of the B_s Meson

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Title: Measurement of the Semileptonic Branching Fraction of the B_s Meson
Author(s):
Lees, J. P.;
Poireau, V.;
Tisserand, V.;
Garra Tico, J.;
Grauges, E.;
Martinelli, M.;
Milanes, D. A.;
Izen, Joseph M.;
Lou, Xinchou
Date Created: 2012-01-03
Format: Text
Item Type: Article
Keywords: Astrophysics
Particles (Nuclear physics)
Branching fractions (Nuclear physics)
Abstract: We report a measurement of the inclusive semileptonic branching fraction of the B_s meson using data collected with the BABAR detector in the center-of-mass energy region above the Υ(4S) resonance. We use the inclusive yield of mesons and the yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of B_s mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the B_s meson is determined to be ℬ(B_s → ℓνX) = 9.5_{-2.0}^{+2.5}(stat)_{-1.9}^{+1.1}(syst)%, where ℓ indicates the average of e and μ.
Publisher: American Physical Society
ISSN: 1550-7998
Source: Physical Review D - Particles, Fields, Gravitation and Cosmology
Link to Related Resource: http://dx.doi.org/10.1103/PhysRevD.85.011101
Persistent Link: http://hdl.handle.net/10735.1/3079
Bibliographic Citation: Lees, J. P., V. Poireau, V. Tisserand, J. Garra Tico, et al. 2012. "Measurement of the semileptonic branching fraction of the B_s meson." Physical Review D - Particles, Fields, Gravitation and Cosmology 85(1), doi:10.1103/PhysRevD.85.011101
Terms of Use: ©2012 American Physical Society

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