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

TL;DR

SUSY_FLAVOR is a Fortran program that calculates 29 flavor and CP-violating observables in the MSSM, including large flavor violation and resummation of chirally enhanced corrections, aiding analysis of rare B meson decays.

Contribution

Introduction of SUSY_FLAVOR v2, a comprehensive tool for analyzing flavor observables in the MSSM with large flavor violation and advanced correction resummation capabilities.

Findings

SUSY_FLAVOR accurately computes flavor observables.

Resummation improves predictions in large tanβ regimes.

Application to B_s → μ^+ μ^- decay demonstrates its utility.

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.