NMSDECAY: A Fortran Code for Supersymmetric Particle Decays in the Next-to-Minimal Supersymmetric Standard Model

TL;DR

NMSDECAY is a Fortran program that calculates decay widths and branching ratios of supersymmetric particles within the NMSSM, extending previous tools to include new decay channels and sectors.

Contribution

It generalizes the SDECAY code to incorporate the extended Higgs and neutralino sectors of the NMSSM, including slepton 3-body decays for the first time.

Findings

Enables precise decay calculations in the NMSSM context.

Includes slepton 3-body decays relevant for singlino-like LSP.

Integrates into NMSSMTools for comprehensive supersymmetry analysis.

Abstract

The code NMSDECAY allows to compute widths and branching ratios of sparticle decays in the Next-to-Minimal Supersymmetric Standard Model. It is based on a generalization of SDECAY, to include the extended Higgs and neutralino sectors of the NMSSM. Slepton 3-body decays, possibly relevant in the case of a singlino-like lightest supersymmetric particle, have been added. NMSDECAY will be part of the NMSSMTools package, which computes Higgs, sparticle masses and Higgs decays in the NMSSM.