Thermal leptogenesis scenario in a model with a dark matter and neutrino masses

Though the Standard Model of particle physics has been very successful as an effective theory, there still are several problems which require extensions of the Standard Model. We here focus on three of them, tiny neutrino masses, a candidate of a Dark Matter particle, and the origin of the baryon asymmetry of the Universe. To address these problems, we consider a model proposed by L. Krauss, S. Nasri, and M. Trodden, where the radiative correction via the three-loop diagrams provides the neutrino mass, and the lightest right-handed neutrinos in the loop can behave as a Dark Matter. In this model, we discuss the possibility to produce the baryon asymmetry of the Universe via thermal leptogenesis.