Electric dipole moments (EDMs) of nucleons and nuclei are actively considered as direct evidence of the CP violation. Calculations of nucleon EDMs on lattice are required to connect the quark- and hadron- level effective CP violating interactions within QCD or other CP violating sources in new physics beyond the standard model. Among them, the theta-induced nucleon EDM, that is the only such renormalizable interaction, has widely been investigated on a lattice. In the report, we review recent developments of the lattice calculations of nucleon EDM induced QCD theta term.
@article{arxiv.2004.10449,
title = {Computing Nucleon Electric Dipole Moment from lattice QCD},
author = {Taku Izubuchi and Hiroshi Ohki and Sergey Syritsyn},
journal= {arXiv preprint arXiv:2004.10449},
year = {2020}
}
Comments
Proceedings of the 37th International Symposium on Lattice Field Theory -- Lattice2019, 16-22 June 2019, Wuhan, China; 15 pages, 11 figures