Measurement of the Semileptonic Branching Ratio of Bs0 to an Orbitally Excited Ds** State: Br(Bs0→Ds1-(2536)μ+νX)
Abstract
In a data sample of approximately 1.3fb-1 collected with the D0 detector between 2002 and 2006, the orbitally excited charm state Ds1±(2536) has been observed with a measured mass of 2535.7±0.6(stat)±0.5(syst)MeV/c2 via the decay mode Bs0→Ds1-(2536)μ+νμX. A first measurement is made of the branching ratio product Br( bmacr →Ds1-(2536)μ+νμX)×Br(Ds1-→D*-KS0). Assuming that Ds1-(2536) production in semileptonic decay is entirely from Bs0, an extraction of the semileptonic branching ratio Br(Bs0→Ds1-(2536)μ+νμX) is made.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 2009
- DOI:
- 10.1103/PhysRevLett.102.051801
- arXiv:
- arXiv:0712.3789
- Bibcode:
- 2009PhRvL.102e1801A
- Keywords:
-
- 13.25.Hw;
- 14.40.Lb;
- Decays of bottom mesons;
- Charmed mesons;
- High Energy Physics - Experiment
- E-Print:
- 7 pages, 2 figures, LaTeX, version with minor changes as accepted by Phys. Rev. Lett