SUSEFLAV: program for supersymmetric mass spectra with seesaw mechanism and rare lepton flavor violating decays

TL;DR

SUSEFLAV is a numerical tool designed to accurately compute supersymmetric mass spectra, including flavor violation effects and the seesaw mechanism, aiding in the analysis of supersymmetry data.

Contribution

It introduces a comprehensive program that incorporates 2-loop RGEs, threshold corrections, and the Type-I seesaw mechanism for detailed supersymmetric spectrum calculations.

Findings

Accurately computes supersymmetric spectra with flavor violation.

Calculates branching ratios for flavor-violating decays.

Includes contributions to muon g-2 and other observables.

Abstract

Accurate supersymmetric spectra are required to confront data from direct and indirect searches of supersymmetry. \SUSEFLAV is a numerical tool which is capable of computing supersymmetric spectra accurately for various supersymmetric breaking scenarios applicable even in the presence of flavor violation. The program solves MSSM RGEs with complete $3\times3$ flavor mixing at 2-loop level and one loop finite threshold corrections to all MSSM parameters by incorporating radiative electroweak symmetry breaking conditions. The program also incorporates the Type-I seesaw mechanism with three massive right handed neutrinos at user defined mass scales and mixing. It also computes branching ratios of flavor violating processes such as $l_j \rightarrow l_i\gamma$, $l_j \rightarrow 3 ~l_i$, $b \rightarrow s\gamma$ and supersymmetric contributions to flavor conserving quantities such as $(g_{\mu}-2)$. A large choice of executables suitable for various operations of the program are provided.