Right-handed sneutrinos as asymmetric DM and neutrino masses from neutrinophilic Higgs bosons

TL;DR

This paper proposes a model extending the NMSSM with right-handed neutrinos and neutrinophilic Higgs fields, explaining small neutrino masses and asymmetric dark matter, while connecting dark matter and baryon asymmetries.

Contribution

It introduces a novel supersymmetric model that naturally generates neutrino masses and asymmetric dark matter, linking their origins through early universe processes.

Findings

Model satisfies particle physics constraints

Dark matter and baryon asymmetries are connected

Neutrino masses arise from small Higgs VEVs

Abstract

We consider an extension of the Next-to-Minimal Supersymmetric Standard Model by three right-handed neutrinos and a pair of neutrinophilic Higgs superfields. The small neutrino masses arise naturally from a small vacuum expectation value of the additional Higgs fields (hence without lepton number violation), while the lightest right-handed sneutrinos can constitute asymmetric Dark Matter. The right-handed sneutrino and baryon asymmetries are connected through equilibrium processes in the early universe, explaining the coincidence of the DM and baryon abundances. We show that particle physics and astrophysical constraints are satisfied.