Parity- and Time-Reversal-Violating Moments of Light Nuclei

TL;DR

This paper calculates parity- and time-reversal-violating moments of nucleons and light nuclei using chiral effective field theory, aiming to inform experimental searches for fundamental symmetry violations.

Contribution

It provides a unified framework for calculating these moments from QCD theta term and dimension-six operators, linking theory with potential experiments.

Findings

Calculated moments for nucleons and light nuclei.

Identified potential of light-nuclear EDM measurements to reveal symmetry violation mechanisms.

Unified chiral EFT approach for these calculations.

Abstract

I present the calculation of parity- and time-reversal-violating moments of the nucleon and light nuclei, originating from the QCD theta term and effective dimension-six operators. By applying chiral effective field theory these calculations are performed in a unified framework. I argue that measurements of a few light-nuclear electric dipole moments would shed light on the mechanism of parity and time-reversal violation.