Abstract
Abstract We have studied the CP asymmetry in B → K φ, K ∗φ transitions in the framework of the standard model (SM), its generalization to the four-generation case and in its supersymmetric (SUSY) extension. It is shown that in the SM and its SUSY extension with three generations, the asymmetry is less than one percent, but gets larger in the four-generation case, and its SUSY extension. It is shown that the asymmetry in the four-generation case is very sensitive to the gluon momentum. Further, we have shown that SUSY contributions change the sign and magnitude of the asymmetry in contrast to the four-generation case, for the same range of parameters in the SUSY extended case, as in the SM.
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