Three-body decays of sleptons in models with non-universal Higgs masses

TL;DR

This paper calculates three-body decay processes of sleptons in supersymmetric models with non-universal Higgs masses, highlighting their importance in specific SUSY-breaking scenarios.

Contribution

It provides explicit formulas and numerical analysis for three-body slepton decays in models with non-universal Higgs masses, focusing on gaugino-mediated SUSY breaking.

Findings

Left-chiral sleptons can be lighter than right-chiral ones.

Decays into lighter sleptons are significant in certain SUSY models.

Numerical results illustrate decay widths in specific scenarios.

Abstract

We compute the three-body decays of charged sleptons and sneutrinos into other sleptons. These decays are of particular interest in SUSY-breaking models with non-universal Higgs mass parameters, where the left-chiral sleptons can be lighter than the right-chiral ones, and lighter than the lightest neutralino. We present the formulas for the three-body decay widths together with a numerical analysis in the context of gaugino-mediated SUSY breaking with a gravitino LSP.