Bc mesons in a Bethe-Salpeter model
Abstract
We apply our Bethe-Salpeter model for mesons to the Bc family with parameters fixed in our previous investigation. We evaluate the mass of the pseudoscalar Bc meson as 6.356 and 6.380 GeV/c2 and the lifetime as 0.47 and 0.46 ps, respectively, in two reductions of the Bethe-Salpeter equation, in good agreement with the recently reported mass of 6.40+/-0.39 (stat) +/-0.13 (syst) GeV/c2 and lifetime of 0.46+0.18-0.16 (stat) +/-0.03 (syst) ps by the CDF Collaboration. We evaluate the decay constant of the Bc meson and compare different contributions to its decay width.
- Publication:
-
Physical Review D
- Pub Date:
- May 1999
- DOI:
- 10.1103/PhysRevD.59.094001
- arXiv:
- arXiv:hep-ph/9807225
- Bibcode:
- 1999PhRvD..59i4001E
- Keywords:
-
- 13.20.He;
- 11.10.St;
- 13.25.Hw;
- 14.40.Nd;
- Decays of bottom mesons;
- Bound and unstable states;
- Bethe-Salpeter equations;
- Bottom mesons;
- High Energy Physics - Phenomenology
- E-Print:
- 9 pages