Testability of leptogenesis with three RH-neutrinos below the electroweak scale

Abstract

The Standard Model extended with right-handed neutrinos whose masses are below the electroweak scale provides a simultaneous solution for the origin of neutrino masses and of the baryon asymmetry of the Universe, that can be tested in current experiments. If three right-handed neutrinos participate to the processes, their parameter space of solutions extends to very large mixing angles, saturating the current experimental constraints. Solutions with right-handed neutrino masses at the GeV scale can be probed in the decay of $B$ mesons at the LHC. For this channel the collision of isotopes of intermediate mass such as Ar provides a better sensitivity per unit of running time compared to collisions with protons.

arXiv comment6 pages, 2 figures. To appear in the proceedings of the Rencontres de Moriond EW 2019, 16-23 March 2019 in La Thuile, Italy

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