One-loop corrections to three-body leptonic chargino decays

TL;DR

This paper computes full one-loop quantum corrections to three-body chargino decays in the MSSM, revealing corrections of a few percent that influence decay rates and lepton distributions.

Contribution

It provides the first detailed calculation of one-loop corrections to these specific three-body decays in the MSSM, including effects on distributions.

Findings

Corrections to decay width are around a few percent.

Radiative corrections significantly affect energy and angular distributions.

Results improve precision in supersymmetric decay predictions.

Abstract

We calculate full one-loop corrections to the genuine three-body decays of the light chargino \chi_1^\pm to \chi^0_1 l^\pm \nu in the Minimal Supersymmetric Standard Model. We find that the corrections to the decay width can be of the order of a few percent. We show also how radiative corrections affect energy and angular distributions of the final lepton.