Supersymmetric CP violation $\epsilon'/\epsilon$ due to asymmetric A-matrix

TL;DR

This paper investigates how asymmetric A-matrices in supersymmetric models can significantly enhance CP violation effects, potentially matching experimental observations of $ ext{Re}(rac{ ext{Epsilon}'}{ ext{Epsilon}})$.

Contribution

It demonstrates that asymmetric A-matrices inspired by string theory can increase supersymmetric contributions to CP violation to observable levels.

Findings

Asymmetric A-matrices can enhance $ ext{Re}(rac{ ext{Epsilon}'}{ ext{Epsilon}})$ to match experimental results.

Supersymmetric CP phases significantly impact CP violation in models with asymmetric A-matrices.

The study connects string-inspired supergravity models with observable CP violation phenomena.

Abstract

We study contributions of supersymmetric CP phases to the CP violation $\epsilon'/\epsilon$ in models with asymmetric $A$-matrices. We consider asymmetric $A$-matrices, which are obtained from string-inspired supergravity. We show that a certain type of asymmetry of $A$-matrices enhances supersymmetric contributions to the CP violation $\epsilon'/\epsilon$ and the supersymmetric contribution to $\epsilon'/\epsilon$ can be of order of the KTeV result, $\epsilon'/\epsilon \sim 10^{-3}$.