Quantification of the electric dipole moment generated by elementary particle physics*

The atomic, nuclear, and nucleon electric dipole moments (EDMs) have significant sensitivity to the CP violation of elementary particle physics [1], but its quantification has for long been obstructed by the nonperturbative physics of quantum chromodynamics. Quite recently, there were significant progresses in this subject, notably the resolution of the strong CP problem and the quantification of hadron level CP violation such as the contributions of the quark chromo-EDM and Weinberg operator (CP violating three-gluon interaction) to the CP-odd hadronic interactions. We are therefore almost attaining the quantification era of the CP violating hadronic interaction in the leading order of standard model effective field theory. In this talk, we summarize the current attempt to quantify the hadronic CP violation contribution to the EDM of nucleons, nuclei, and atoms.

[1] N. Yamanaka et al., Eur. Phys. J. A 53 (2017) 54.