Lepton Electric Dipole Moment and Strong CP Violation

Understand

Contribution of the strong CP angle, $\bar\theta$, to the Wilson Coefficients of electron and muon electric dipole moment (EDM) operators are discussed.

• Previously, $\bar\theta$ contribution to the electron EDM operator was calculated by Choi and Hong.
• However, the effect of CP-violating three meson coupling was missing there.
• We include this missing contribution for the first time in the literature, and reevaluate the Wilson coefficients of the lepton EDM operator.