Radiative decays of D mesons

The short-distance contribution due to the c --> u gamma penguin as well as long-distance contributions are considered in an analysis of D --> V gamma decays, the latter being dominant. The matrix elements for nine D --> 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 --> (K) over bar(0)*(gamma) and D-s(+) --> rho(+)gamma, being a few times 10(-4).