Speaker
Description
In this talk, I discuss a new scenario that explains the baryon asymmetry of the Universe through a minimal extension of the Standard Model (SM). In this scenario, all three Sakharov conditions are simultaneously satisfied during the decoupling of CP-violating electroweak (EW) sphaleron processes. As the source of the CP asymmetry in the EW sphaleron process, we consider an effective theory in which a CP-violating dimension-six operator is added to the SM. We show that this scenario can be tested by near-future measurements of the electron electric dipole moment. We also demonstrate that a model containing additional EW-multiplet fermions with CP-violating Yukawa interactions provides a possible ultraviolet completion of this scenario. This talk is based on arXiv:2505.09984 and arXiv:2604.00649.