Maximal Electric Dipole Moments of Nuclei with Enhanced Schiff Moments

TL;DR

This paper investigates the maximum possible electric dipole moments of certain heavy nuclei, like 225Ra, within a specific supersymmetric model, considering experimental constraints and using a differential-geometrical approach.

Contribution

It introduces a method to calculate the maximal EDMs of nuclei with Schiff moments in the MCPMFV MSSM framework, considering existing experimental limits.

Findings

225Ra EDM could reach 6 to 50 x 10^{-27} e.cm

Maximal EDM values are derived using a differential-geometrical approach

Constraints from Thallium, neutron, and Mercury EDMs are incorporated

Abstract

The electric dipole moments (EDMs) of heavy nuclei, such as 199Hg, 225Ra and 211Rn, can be enhanced by the Schiff moments induced by the presence of nearby parity-doublet states. Working within the framework of the maximally CP-violating and minimally flavour-violating (MCPMFV) version of the MSSM, we discuss the maximal values that such EDMs might attain, given the existing experimental constraints on the Thallium, neutron and Mercury EDMs. The maximal EDM values of the heavy nuclei are obtained with the help of a differential-geometrical approach proposed recently that enables the maxima of new CP-violating observables to be calculated exactly in the linear approximation. In the case of 225Ra, we find that its EDM may be as large as 6 to 50 x 10^{-27} e.cm.