Implication of the weak phase $\beta$ measured in $B\to \rho \gamma$ decay

Abstract

We explore the exclusive $B^0\to {\rho }^0\gamma$ decay to obtain the time-dependent CP asymmetry in $b\to d\gamma$ 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.

Comments: 4 pages, talk given at the 32nd International Conference on High Energy Physics (ICHEP'04), Beijing, China, 16-22 Aug. 2004