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. RI Patrignani, Claudia/C-5223-2009; Neri, Nicola/G-3991-2012; Monge, Maria Roberta/G-9127-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012

Measurement of the semileptonic branching fraction of the B-s meson

STRACKA, SIMONE;CALDERINI, GIOVANNI;ANGELINI, CARLO;BATIGNANI, GIOVANNI;BETTARINI, STEFANO;Casarosa G;FORTI, FRANCESCO;GIORGI, MARCELLO;PAOLONI, EUGENIO;RIZZO, GIULIANA;
2012-01-01

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. RI Patrignani, Claudia/C-5223-2009; Neri, Nicola/G-3991-2012; Monge, Maria Roberta/G-9127-2012; Forti, Francesco/H-3035-2011; Rotondo, Marcello/I-6043-2012
2012
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/188806
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