Toward verification of electroweak baryogenesis by electric dipole moments

Understand

We study general aspects of the CP-violating effects on the baryon asymmetry of the Universe (BAU) and electric dipole moments (EDMs) in models extended by an extra Higgs doublet and a singlet, together with electroweak-interacting fermions.

• In particular, the emphasis is on the structure of the CP-violating interactions and dependences of the BAU and EDMs on masses of the relevant particles.
• In a concrete mode, we investigate a relationship between the BAU and the electron EDM for a typical parameter set.
• As long as the BAU-related CP violation predominantly exists, the electron EDM has a strong power in probing electroweak baryogenesis.