Speaker
Description
The electric dipole moments (EDM) of electron, an observable sensitive to CP violation, is expected to plobe physics beyond the Standard Model (BSM) at TeV scale due to significant improvements in experimental precision. In this study, we evaluated the CP-violating dimension-6 operator for electroweak bosons (the electroweak Weinberg operator) generated at the two-loop level by CP-violating Yukawa interactions involving BSM fermions and scalars in a form independent of scalar particles. We calculated the contribution of this operator to the electron EDM. when the scalar is a BSM scalar,this contribution represents a new 3-loop effect. In contrast, when the scalar is the SM Higgs, this contribution becomes a higher order correction to the 2-loop contribution of the Barr-Zee diagram. We examined the significance of this contribution and suggest that the 3-loop contributions to the electron EDM from BSM models could be tested in future experiments. We examined the significance of this contribution and suggest that the 3-loop contributions to the electron EDM induced by BSM models, such as the dark matter model with electroweak interacting massive fermions, could be tested in future experiments.
