Abstract
We analyze the predictions for CP asymmetries in B 0-meson decays within the framework of the supersymmetric standard model (SSM). It is pointed out that owing to sizable new contributions to B d 0− B 0 d and K 0− K 0 mixings, the experimentally allowed range for the CP-violating phase δ of the Cabibbo-Kobayashi-Maskawa matrix may be different from the one obtained in the standard model (SM). This has important effects on the allowed values of CP asymmetries in B 0-meson decays and on their correlations. We calculate the ratio R of the SSM and the SM contributions to the B 0d– B 0 d mixing parameter x d and discuss in detail the ranges of R and S which are consistent with the experimental values of x d and the CP violation parameter ϵ for K 0– K 0 mixing. The CP asymmetries are predicted to have values different from the SM_predictions in sizable regions of parameter space. We also discuss the SSM predictions for B 0 s – B 0 s mixing.
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