SUSY_FLAVOR library and constraints on $B_s\to {\mu }^{+}{\mu }^{-}$ decay rate

Abstract

I present SUSY_FLAVOR - a Fortran 77 program able to calculate simultaneously 29 low-energy flavor and CP-violating observables in the general R-parity conserving MSSM, including the case of large flavor violation in the sfermion sector. SUSY_FLAVOR v2 performs also the resummation of chirally enhanced corrections, arising in large $\tan \beta$ regime and/or large trilinear soft mixing terms, to all orders of perturbation theory. I discuss an example of application of SUSY_FLAVOR to analysis of the $B_s\to {\mu }^{+}{\mu }^{-}$ decay rate in the MSSM.

Comments: 5 pages, 2 figures, to appear in the proceedings of the Rencontres du Vietnam "Beyond The Standard Model of Particle Physics", Qui Nhon, Vietnam July 15-21, 2012