One-loop quark and squark corrections to the lightest chargino pair production in photon-photon collisions

TL;DR

This paper analyzes one-loop quantum corrections from quarks and squarks in the MSSM to chargino pair production in photon collisions, highlighting typical cross section enhancements and CP-violating effects.

Contribution

It provides detailed analytical and numerical results on one-loop corrections in the MSSM for chargino production via photon fusion, including CP-violating phase effects.

Findings

Cross sections are typically enhanced by several percent due to corrections.

CP-violating phases from squark and chargino mass matrices influence the results.

The study offers insights for future collider experiments on supersymmetric particle production.

Abstract

We present the detailed analytical and numerical investigations of the one-loop radiative corrections of all quarks and squarks in the MSSM to the lightest chargino pair production via $\gamma \gamma$ fusion at the future NLC. The numerical corrections show that the cross sections of the subprocess and the parent process are typically enhanced by several percent. We studied also the effects induced by the CP violating complex phases stemming from squark and chargino mass matrices in the MSSM at one-loop level.