Electromagnetic interactions in heavy hadron chiral theory
Abstract
Electromagnetic interactions are incorporated into heavy hadron chiral perturbation theory. Short- and long-distance magnetic moment contributions to the chiral lagrangian are identified, and M1 radiative decays of heavy vector mesons and sextet baryons are studied. Using recent CLEO D ∗ branching fraction ratio data, we fit the meson coupling to the axial vector Goldstone current and find g12=0.34±0.48 for mc=1700 MeV. Finally, we obtain model independent predictions for total and partial widths of charm and bottom vector mesons.
- Publication:
-
Physics Letters B
- Pub Date:
- December 1992
- DOI:
- 10.1016/0370-2693(92)91340-F
- arXiv:
- arXiv:hep-ph/9209239
- Bibcode:
- 1992PhLB..296..408C
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 12 pages, 0 figures