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Electromagnetic Interactions in Heavy Hadron Chiral Theory
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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.
Forward citations
Cited by 4 Pith papers
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