paper

Neutrino Masses and Scalar Singlet Dark Matter

arXiv:1609.03274 · doi:10.1103/PhysRevD.95.055003

Abstract

We propose a simple extension of the Standard Model (SM) which has a viable dark matter (DM) candidate, as well as can explain the generation of tiny neutrino masses. The DM is an electroweak (EW) singlet scalar , odd under an imposed exact symmetry, interacting to SM through `Higgs-portal' coupling, while all other particles are even under . The model also has an EW isospin scalar, and a pair of EW isospin vector, and , responsible for generating tiny neutrino mass via the effective dimension seven operator. Thanks to the additional interactions with , the scalar singlet DM survives a large region of parameter space by relic density constraints from WMAP/PLANCK and direct search bounds from updated LUX data. Constraints on the model from Large Hadron Collider (LHC) has also been discussed.

arXiv commentPublished version in PRD with some additional references; Discussion on the discrete anomaly is included

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