Radiative decays of D mesons

Details Radiative decays of D mesons Radiative decays of D mesons

1998-08-20

arxiv.org/abs/hep-ph/9808369v2

Nucl.Phys.Proc.Suppl.75B:138-140,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

3 pages, latex; corrected the values in Table 1; Talk given by P. Singer at the Hyperons, Charm and Beauty Hadrons, Genova, It

Scientific paper

10.1016/S0920-5632(99)00341-2

The short-distance contribution due to the $c\to u\gamma$ penguin as well as long-distance contributions are considered in an analysis of $D\to V\gamma$ decays, the latter being dominant. The matrix elements for nine $D\to V\gamma$ transitions are calculated using a hybrid model which combines heavy quark effective theory and the chiral Lagrangian. We present the expected range of the branching ratios for these decays, the most frequent ones $D^0\to \bar{K}^{*0}\gamma$ and $D^+_s \to \rho^+\gamma$, being a few times $10^{-4}$.

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