Título:
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A Measurement of the Semileptonic Branching Fraction of the B_s Meson
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Autor/a:
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Graugés Pous, Eugeni; Garra Ticó, Jordi; BABAR Collaboration
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Otros autores:
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Universitat de Barcelona |
Abstract:
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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 (CM) energy region above the Upsilon (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 CM energy. The inclusive semileptonic branching fraction of the B_s meson is determined to be B(B_s to l nu X)=9.5 (+2.5/-2.0)(stat)(+1.1/-1.9)(syst)%, where l indicates the average of e and mu. |
Materia(s):
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-Mesons (Física nuclear) -Leptons (Física nuclear) -Mesons (Nuclear physics) -Leptons (Nuclear physics) |
Derechos:
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(c) American Physical Society, 2012
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Tipo de documento:
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Artículo Artículo - Versión publicada |
Editor:
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American Physical Society
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