Implication of the Weak Phase β Measured in B → ργ Decay

We explore the exclusive B⁰ → ρ⁰γ decay to obtain the time-dependent CP asymmetry in b → dγ decay process. We find that the complex RL and RR mass insertion to the squark sector in the MSSM can lead to a large deviation of CP asymmetry from that predicted in the Standard Model.