Quark model analysis of the Weinberg operator contribution to the nucleon EDM

Abstract

The Weinberg operator (chromo-electric dipole moment of gluon) is a CP violating quantity generated in many candidates of new physics beyond the standard model, and it contributes to observables such as the electric dipole moments (EDM) of the neutron or atoms which are currently measured in experiments. In this proceedings contribution, we report on our result of the evaluation of the Weinberg operator contribution to the nucleon EDM in the nonrelativistic quark model using the Gaussian expansion method.

arXiv comment6 pages, 3 figures, proceedings of the 8th Asia-Pacific conference on Few-Body problems in Physics (APFB2020), Kanazawa, Japan, March 2021

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