Parity- and Time-Reversal-Violating Form Factors of the Deuteron

TL;DR

This paper calculates the deuteron's electric-dipole and magnetic-quadrupole form factors arising from parity and time-reversal violation in quark-gluon interactions, aiding in identifying underlying symmetry-breaking sources.

Contribution

It provides a theoretical framework within chiral perturbation theory to connect deuteron form factors with fundamental symmetry-breaking sources in QCD.

Findings

Calculated deuteron form factors linked to specific symmetry violations

Identified how form factor sizes reveal underlying sources

Enhanced understanding of parity and time-reversal violation effects

Abstract

We calculate the electric-dipole and magnetic-quadrupole form factors of the deuteron that arise as a low-energy manifestation of parity and time-reversal violation in quark-gluon interactions of effective dimension four and six: the QCD vacuum angle, the quark electric and chromo-electric dipole moments, and the gluon chromo-electric dipole moment. Within the framework of two-flavor chiral perturbation theory, we show that the relative sizes of the corresponding moments allow an identification of the symmetry-breaking source.