Decay constants of heavy vector mesons in relativistic Bethe Salpeter method
Abstract
In a previous Letter, we computed the decay constants of heavy pseudoscalar mesons in the framework of relativistic (instantaneous) Bethe-Salpeter method (full 0- Salpeter equation), in this Letter, we solve the full 1- Salpeter equation and compute the leptonic decay constants of heavy-heavy and heavy-light vector mesons. The theoretical estimate of mass spectra of these heavy-heavy and heavy-light vector mesons are also presented. Our results for the decay constants and mass spectra include the complete relativistic contributions. We find FDs∗ ≈ 375 ± 24, FD∗ ≈ 340 ± 23 (D∗0 ,D∗±), FBs∗ ≈ 272 ± 20, FB∗ ≈ 238 ± 18 (B∗0 ,B∗±), FBc∗ ≈ 418 ± 24, FJ / Ψ ≈ 459 ± 28, FΨ (2 S) ≈ 364 ± 24, Fϒ ≈ 498 ± 20 and Fϒ (2 S) ≈ 366 ± 27 MeV.
- Publication:
-
Physics Letters B
- Pub Date:
- February 2006
- DOI:
- 10.1016/j.physletb.2005.12.005
- arXiv:
- arXiv:math-ph/0512009
- Bibcode:
- 2006PhLB..633..492W
- Keywords:
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- Mathematical Physics;
- Mathematics - Mathematical Physics
- E-Print:
- 11 pages, 7 tables