Electromagnetic Interactions in Heavy Hadron Chiral Theory

Details Electromagnetic Interactions in Heavy Hadron Chiral Theory Electromagnetic Interactions in Heavy Hadron Chiral Theory

1992-09-15

arxiv.org/abs/hep-ph/9209239v1

Phys.Lett.B296:408-414,1992; ERRATUM-ibid.B300:410,1993

Physics

High Energy Physics

High Energy Physics - Phenomenology

12 pages, 0 figures

Scientific paper

10.1016/0370-2693(92)91340-F

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 $g_1^2 = 0.34 \pm 0.48$ for $\mc = 1700 \MeV$. Finally, we obtain model independent predictions for total and partial widths of charm and bottom vector mesons.

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