Leading two-loop Yukawa corrections to the pole masses of SUSY fermions in the MSSM

TL;DR

This paper computes two-loop Yukawa corrections to the pole masses of SUSY fermions in the MSSM, providing precise theoretical predictions relevant for future collider experiments.

Contribution

It presents the first calculation of leading two-loop Yukawa corrections to SUSY fermion pole masses including complex parameters in the MSSM.

Findings

Corrections are a few tenths of a percent, exceeding expected experimental resolution.

Numerical analysis demonstrates the significance of these corrections for collider measurements.

Provides a computational tool for calculating two-loop pole masses with complex parameters.

Abstract

We have calculated the leading Yukawa corrections to the chargino, neutralino and gluino pole masses in the DR-bar scheme in the Minimal Supersymmetric Standard Model (MSSM) with the full set of complex parameters. We have performed a numerical analysis for a particular point in the parameter space and found typical corrections of a few tenths of a percent thus exceeding the experimental resolution as expected at the ILC. We provide a computer program which calculates two-loop pole masses for SUSY fermions with complex parameters up to the respective order in pertubation theory.