Neutron Electric Dipole Moment under Non-Universal Soft SUSY Breaking Terms

Abstract

The electric dipole moment of the neutron (EDMN) is re-examined in a general framework of the soft supersymmetry breaking. We point out some features of the relation between the EDMN and non-universal soft supersymmetry breaking terms. We give the constraints on the soft scalar masses and the soft CP phases, which have the rather large dependence on the non-universality of the soft breaking terms. We also show that the soft CP phase $\phi_B$ which has no natural suppression mechanism may not have large contribution to the EDMN in a certain parameter region where the radiative symmetry breaking occurs successfully. $\phi_B$ may not need to be so small.