(D* to D + gamma) and (B* to B + gamma) as derived from QCD Sum Rules

Abstract

The method of QCD sum rules in the presence of the external electromagnetic $F_{\mu \nu }$ field is used to analyze radiative decays of charmed or bottomed mesons such as $D^{\ast }\to D\gamma$ and $B^{\ast }\to B\gamma$, with the susceptibilities obtained previously from the study of baryon magnetic moments. Our predictions on $D^{\ast }$ decays agree very well with the experimental data. There are differences among the various theoretical predictions on $B^{\ast }$ decays but the data are not yet available.

11 pages, LateX

References in corpus (2)

• Radiative $D^{\ast }$ Decay Using Heavy Quark and Chiral Symmetry
• Electromagnetic Interactions in Heavy Hadron Chiral Theory

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