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

Abstract

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 in the TeV range. The scalar sector, which is enriched in order to account for the small neutrino masses, is treated in detail and shows potentially sizable Higgs boson h \to γγ rates together with large h invisible branching ratios.

16 pages, 6 figures; discussion about the neutrino masses extended; references added; version published on PRD

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Cited by in corpus (4)

• Leptoquarks, Dark Matter, and Anomalous LHC Events
• On the impact of the Higgs boson on the production of exotic particles at the LHC
• New constraints on radiative seesaw models from IceCube and other neutrino detectors
• Inert sextuplet scalar dark matter at the LHC and future colliders