Rare radiative B→τ+τ−γ decay

The radiative B→τ+τ−γ decay is investigated in the framework of the Standard Model. When only short (short and long together) distance contributions are taken into account, the Branching Ratio is found as 9.54×10−9 (1.52×10−8), for the value of the cut δ=0.01 imposed on the photon energy.