Direct search for right-handed neutrinos and neutrinoless double beta decay
Direct search for right-handed neutrinos and neutrinoless double beta decay
We consider an extension of the Standard Model by two right-handed neutrinos, especially with masses lighter than the charged |$K$| meson. This simple model can realize the seesaw mechanism for neutrino masses and also baryogenesis by flavor oscillations of right-handed neutrinos. We summarize the constraints on right-handed neutrinos from direct …