CP Violation in SUSY Particle Production and Decay

TL;DR

This paper reviews CP violation in the MSSM, focusing on measurable asymmetries in chargino and neutralino production at the ILC, demonstrating their potential to confirm CP violation in supersymmetry.

Contribution

It introduces the analysis of CP-odd and T-odd observables, such as triple product asymmetries, in SUSY particle processes at the ILC, highlighting their experimental accessibility.

Findings

Asymmetries can be measured in a large MSSM parameter space.

Triple product asymmetries are effective CP-violation indicators.

Asymmetries provide a key tool for establishing CP violation in SUSY.

Abstract

Recent studies about CP violation in the Minimal Supersymmetric Standard Model (MSSM) with complex parameters are reviewed. In order to unambiguously identify the CP-violating phenomena it is necessary to study CP-odd or T-odd observables. In chargino and neutralino production and decay at the International Linear Collider (ILC) triple product asymmetries and asymmetries defined via transverse beam polarization have been analyzed. It has been found that these asymmetries can be measured at the ILC in a large region of the MSSM parameter space and are thus an important tool to establish CP violation in supersymmetry.