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)=9.5-2.0+2.5(stat)-1.9+1.1(syst)%, where ℓ indicates the average of e and μ.

Measurement of the semileptonic branching fraction of the B_{s} meson / J., L., V., P., V., T., J., G.T., E., G., M., M., D., M., A., P., M., P., G., E., B., S., D., B., L., K., Kolomensky, Y.u., G., L., H., K., T., S., D., A., C., H., T., M., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - STAMPA. - 85:(2012), pp. 011101(R)-1-011101(R)-9. [10.1103/PhysRevD.85.011101]

Measurement of the semileptonic branching fraction of the B_{s} meson

LANCERI, LIVIO;VITALE, LORENZO;
2012-01-01

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)=9.5-2.0+2.5(stat)-1.9+1.1(syst)%, where ℓ indicates the average of e and μ.
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11368/2565820
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