We report a measurement of the inclusive semileptonic branching fraction of the Bs 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 ϕ mesons and the ϕ yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of Bs mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the Bs meson is determined to be ℬ(Bs→ℓνX)=9.5+2.5−2.0(stat)+1.1−1.9(syst)%, where ℓ indicates the average of e and μ.

Lees, J.P., Poireau, V., Tisserand, V., Tico, J.G., Grauges, E., Martinelli, M., et al. (2012). Measurement of the semileptonic branching fraction of the B(s) meson. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(1), 1-9 [10.1103/PhysRevD.85.011101].

Measurement of the semileptonic branching fraction of the B(s) meson

PATRIGNANI, CLAUDIA;
2012

Abstract

We report a measurement of the inclusive semileptonic branching fraction of the Bs 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 ϕ mesons and the ϕ yield in association with a high-momentum lepton to perform a simultaneous measurement of the semileptonic branching fraction and the production rate of Bs mesons relative to all B mesons as a function of center-of-mass energy. The inclusive semileptonic branching fraction of the Bs meson is determined to be ℬ(Bs→ℓνX)=9.5+2.5−2.0(stat)+1.1−1.9(syst)%, where ℓ indicates the average of e and μ.
2012
Lees, J.P., Poireau, V., Tisserand, V., Tico, J.G., Grauges, E., Martinelli, M., et al. (2012). Measurement of the semileptonic branching fraction of the B(s) meson. PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY, 85(1), 1-9 [10.1103/PhysRevD.85.011101].
Lees, J. P.; Poireau, V.; Tisserand, V.; Tico, J. Garra; Grauges, E.; Martinelli, M.; Milanes, D. A.; Palano, A.; Pappagallo, M.; Eigen, G.; Stugu, B....espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/537413
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