CP Violation in rare semileptonic B decays and supersymmetry

Details CP Violation in rare semileptonic B decays and supersymmetry CP Violation in rare semileptonic B decays and supersymmetry

1999-12-20

arxiv.org/abs/hep-ph/9912430v2

Nucl.Phys.B574:43-69,2000

Physics

High Energy Physics

High Energy Physics - Phenomenology

31 pages, 9 figures; some misprints corrected and references added, results unchanged; submitted to Nucl. Phys. B

Scientific paper

10.1016/S0550-3213(00)00041-9

We study the effect of new flavor changing SUSY phases arising in the squark mass matrix in semileptonic decays B->Xs ll and B->K(*) ll (l=e,mu). SUSY effects are parametrized using the mass insertion approximation formalism. Constraints on SUSY contributions coming from other processes (e.g. b->s gamma, B->K* ll) are taken into account. Chargino and gluino contributions to photon and Z-mediated decays are included and non-perturbative corrections are considered. We study the correlation between the CP (and forward--backward) asymmetries and the expected value of the inclusive branching ratio. Several possible scenarios are distinguished and discussed according to the mass insertion that is considered.

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