1210.7202 (Francois-Xavier Josse-Michaux et al.)

Triplet Scalar Dark Matter and Leptogenesis in an Inverse See-Saw Model
of Neutrino Mass Generation    [PDF]

Francois-Xavier Josse-Michaux, Emiliano Molinaro

We propose a UV-completion of the inverse see-saw scenario using fermion SU(2) triplet representations. Within this framework, a variation of the standard thermal leptogenesis is achievable at the O(TeV) scale, owing to the presence of a viable Dark Matter candidate. This baryogenesis scenario is ruled out if a triplet fermion is observed at the LHC. The Dark Matter is given by the lightest neutral component of a complex scalar SU(2) triplet, with mass m_{DM} > 1290 GeV. The scalar sector, which is enriched in order to account for the small neutrino masses, is treated in detail and shows potentially Higgs boson $h \to \gamma \gamma$ rates together with large h invisible branching ratios.

View original: http://arxiv.org/abs/1210.7202