Supersymmetry andCPviolation inBs0−B¯s0mixing andBs0→J/ψϕdecay

Abstract

Supersymmetric contributions to time independent asymmetry in B{sub s}{sup 0}{yields}J/{psi}{phi} process are analyzed in view of recent Tevatron experimental measurements. We show that the experimental limits of the mass difference {delta}M{sub B{sub s}} and the mercury electric dipole moment significantly constrain the supersymmetric (SUSY) contribution to B{sub s}{sup 0}-B{sub s}{sup 0} mixing, so that sin2{beta}{sub s} < or approx. 0.1. We also point out that the one loop SUSY contribution to B{sub s}{sup 0}{yields}J/{psi}{phi} decay can be important and can lead to large indirect CP asymmetries which are different for different polarization states. These new physics effects in the decay amplitude can be consistent with CP measurements in the B{sub d} system.