Speaker
Kei Shibata
Description
In this study, we show that thermal leptogenesis is successful in the natural SO(10) GUT.
When lepton flavor effects are added to thermal leptogenesis, the second-lightest right-handed neutrino contribute non-negligibly. Compared to the mass of the right-handed neutrino predicted by the symmetry of the natural SO(10) GUT, that obtained in this study is about six times smaller than that of the lightest right-handed neutrino contribution. Furthermore, the mass of the left-handed neutrino, determined by the same symmetry, is also predicted to be about 1/6.
