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 Y(4S) resonance. We use the inclusive yield of phi mesons and the phi 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 -> l nu X) = 9.5(-2.0)(+2.5)(stat)(-1.9)(+1.1)(syst)% where l indicates the average of e and mu.

Measurement of the semileptonic branching fraction of the B s meson / J. P., L., V., P., V., T., J. G., T., E., G., M., M., D. A., M., A., P., M., P., G., E., B., S., D. N., B., L. T., K., Yu G., K., G., L., H., K., T., S., D. J., A., C., H., T. S., M., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 85:1(2012), p. 011101. [10.1103/physrevd.85.011101]

Measurement of the semileptonic branching fraction of the B s meson

CAVOTO, Gianluca;FACCINI, Riccardo;FERRONI, Fernando;
2012

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 Y(4S) resonance. We use the inclusive yield of phi mesons and the phi 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 -> l nu X) = 9.5(-2.0)(+2.5)(stat)(-1.9)(+1.1)(syst)% where l indicates the average of e and mu.
2012
01 Pubblicazione su rivista::01a Articolo in rivista
Measurement of the semileptonic branching fraction of the B s meson / J. P., L., V., P., V., T., J. G., T., E., G., M., M., D. A., M., A., P., M., P., G., E., B., S., D. N., B., L. T., K., Yu G., K., G., L., H., K., T., S., D. J., A., C., H., T. S., M., et al.. - In: PHYSICAL REVIEW D, PARTICLES, FIELDS, GRAVITATION, AND COSMOLOGY. - ISSN 1550-7998. - 85:1(2012), p. 011101. [10.1103/physrevd.85.011101]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/519186
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