Probing Baryon Asymmetry of the Universe by Using Lepton Universality

Takehiko Asaka, Shintaro Eijima, Kazuhiro Takeda

We study the model with three right-handed neutrinos which masses are smaller than the weak scale $\mathcal{O}(10^2)$ GeV (called as the $\nu$MSM). The model can explain the origin of n…