Searching for the squark flavor mixing in CP violations of Bs -> K+ K- and K0bar K0 decays

Understand

We study CP violations in the B_s-> K+K- and Bs->K0K0 decays in order to find the contribution of the supersymmetry, which comes from the gluino-squark mediated flavor changing current.

• We obtain the allowed region of the squark flavor mixing parameters by putting the experimental data, the mass difference Delta M_Bs, the CP violating phase phi_s in Bs to J/psi phi decay and the b to s gamma branching ratio.
• In addition to these data, we take into account the constraint from the asymmetry of B0->K+pi because the Bs->K+K- decay is related with the B0->K+pi- decay by replacing the spectator s with d.
• Under these constraints, we predict the magnitudes of the CP violation in the Bs->K+K- and Bs->K0K0 decays.