Measurement of the semileptonic branching fraction of the Bs meson
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.
- Publication:
-
Physical Review D
- Pub Date:
- January 2012
- DOI:
- 10.1103/PhysRevD.85.011101
- arXiv:
- arXiv:1110.5600
- Bibcode:
- 2012PhRvD..85a1101L
- Keywords:
-
- 14.40.Nd;
- 13.20.He;
- Bottom mesons;
- Decays of bottom mesons;
- High Energy Physics - Experiment
- E-Print:
- 8 pages, 7 eps figures