SUSY and CP Violation

Abstract

Flavor changing neutral current and CP violating processes are discussed in the minimal supergravity model. The constraint on charged Higgs mass from the new measurement of the inclusive branching ratio of the $b\rightarrow s\gamma$ process is obtained. The $B^0_d-\bar{B}^0_d$ mixing parameter ($x_d$) and the CP violating parameter in the $K^0-\bar{K}^0$ mixing ($\epsilon _K$) are calculated in this model and it is shown that these parameters can be enhanced by 10\% $\sim$ 20 \% compared to the prediction within the standard model. Impacts on new physics search at B factories are also discussed.