Examining the cancellation mechanism of neutron EDM in a model with dilaton-dominated susy breaking

Abstract

We examine the cancellation mechanism between the different contributions to the electric dipole moment of the neutron in a model with dilaton-dominated SUSY breaking. We find these accidental cancellations occur at few points in parameter space. For a wide region of this space we must constrain the phase of $μ$ to be of order $10^{-1}$ and have the phases of $A$ and $μ$ strongly correlated in order to have small neutron EDM. Moreover, we consider the indirect CP violation parameter $ε$ in this region where the electric dipole moment is less than the experimental limit and find that we can generate $ε$ of order $10^{-6}$.