Electric Dipole Moments of Light Nuclei from Chiral EFT

TL;DR

This paper presents calculations of electric dipole moments (EDMs) of light nuclei using chiral effective field theory, linking them to CP-violating physics through six low-energy constants, and discusses their potential to identify sources of CP violation.

Contribution

It introduces a framework expressing light nuclei EDMs in terms of six low-energy constants within chiral EFT, providing explicit calculations for deuteron, triton, and helion.

Findings

EDMs can be expressed in terms of six low-energy constants.

Explicit EDM calculations for deuteron, triton, and helion.

Potential to distinguish CP-violation sources through EDM measurements.

Abstract

Recent calculations of EDMs of light nuclei in the framework of chiral effective field theory are presented. We argue that they can be written in terms of the leading six low-energy constants encoding CP-violating physics. EDMs of the deuteron, triton, and helion are explicitly given in order to corroborate our claim. An eventual non-zero measurement of these EDMs can be used to disentangle the different sources and strengths of CP-violation.