Graugés Pous, EugeniGarra Ticó, JordiBABAR Collaboration2018-09-252018-09-2520121550-7998https://hdl.handle.net/2445/124811We 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.application/pdfeng(c) American Physical Society, 2012Mesons (Física nuclear)Leptons (Física nuclear)Mesons (Nuclear physics)Leptons (Nuclear physics)info:eu-repo/semantics/article6549842018-09-25info:eu-repo/semantics/openAccess