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arXiv · hep-ph/9209239

Electromagnetic Interactions in Heavy Hadron Chiral Theory

Peter Cho·Howard Georgi
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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 $g_1^2 = 0.34 \pm 0.48$ 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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Peter Cho, Howard Georgi. 1992-09-15. Electromagnetic Interactions in Heavy Hadron Chiral Theory. https://doi.org/10.1016/0370-2693(92)91340-f

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