Large CP Violation in Bs Meson Mixing with EDM constraint in Supersymmetry
Abstract
Motivated by the recent measurement of the like-sign dimuon charge asymmetry, we investigate anomalous CP violation in the Bs- barBs mixing within the supersymmetry. We show that when gluino diagrams dominate supersymmetry contributions, it is very difficult to realize a large Bs- barBs mixing phase under the constraint from electric dipole moments barring cancellations. This constraint can be ameliorated by supposing superparticles decoupled. In this limit, we find that it is possible to achieve the large CP asymmetry, and the branching ratio of Bs -> mu+ mu- tends to become sizable.
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