Enhanced nuclear Schiff moment in stable and metastable nuclei

Abstract

Nuclei with static intrinsic octupole deformation or a soft octupole vibrational mode lead to strongly enhanced collective nuclear Schiff moments. This paper investigates octupole deformations in stable and very long lifetime nuclei such as $^{153}\mathrm{Eu},\phantom{\rule{0.16em}{0ex}}^{235}\mathrm{U},\phantom{\rule{0.16em}{0ex}}^{237}\mathrm{Np}$, and $^{227}\mathrm{Ac}$. The estimates of the enhanced Schiff moments, atomic electric dipole moments, and T,P-odd interaction constants in molecules containing these nuclei are presented. Corresponding experiments may be used to test CP-violation theories predicting T,P-violating nuclear forces and to search for axions.

Topics & Concepts