In this work, the radiative $B_c\to D_s^{*}\gamma$ decay is investigated in the framework of QCD sum rules. The transition form factors responsible for the decay are calculated. The total branching ratio for this decay is estimated to be in the order of ${10}^{-5}$, so this decay can be measurable at LHC in the near future.

• Received 20 August 2007

DOI:https://doi.org/10.1103/PhysRevD.76.114007