SUSY_FLAVOR: a computational tool for FCNC and CP-violating processes in the MSSM

TL;DR

SUSY_FLAVOR is a Fortran 77 tool that computes low-energy observables related to flavor-changing neutral currents and CP violation in the MSSM, incorporating one-loop calculations with higher-order QCD effects.

Contribution

It provides a comprehensive, exact sfermion mass eigenbasis calculation of various FCNC and CP-violating processes in the MSSM, improving upon previous approximations.

Findings

Accurately predicts meson mixing parameters.

Calculates rare decay branching ratios.

Determines electric dipole moments.

Abstract

We present SUSY_FLAVOR -- a Fortran 77 program that calculates important leptonic and semi-leptonic low-energy observables in the general R-parity conserving MSSM. For a set of input MSSM parameters, the code gives predictions for the K0-bar K0, D-bar D, B_d-bar B_d and B_s-bar B_s mixing parameters; B to X_s gamma, B_{s,d} to l+ l-, K0_L to pi nu-bar nu and K+ to pi+ nu-bar nu decay branching ratios; and the electric dipole moments of the leptons and the neutron. All these quantities are calculated at one-loop level (with some higher-order QCD corrections included) in the exact sfermion mass eigenbasis, without resorting to mass insertion approximations.