Large CP Violation in B_s Meson Mixing with EDM constraint in Supersymmetry

Details Large CP Violation in B_s Meson Mixing with EDM constraint in Supersymmetry Large CP Violation in B_s Meson Mixing with EDM constraint in Supersymmetry

2010-12-26

arxiv.org/abs/1012.5501v1

JHEP 1103:130,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

20 pages, 5 figures

Scientific paper

10.1007/JHEP03(2011)130

Motivated by the recent measurement of the like-sign dimuon charge asymmetry, we investigate anomalous CP violation in the B_s- bar{B}_s mixing within the supersymmetry. We show that when gluino diagrams dominate supersymmetry contributions, it is very difficult to realize a large B_s- bar{B}_s 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 B_s -> mu^+ mu^- tends to become sizable.

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