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

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.

19 pages, 2 figures, references added

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• Hunting for Heavy Majorana Neutrinos with Lepton Number Violating Signatures at LHC
• Snowmass-2013 Cosmic Frontier 3 (CF3) Working Group Summary: Non-WIMP dark matter
• Oscillating Asymmetric Sneutrino Dark Matter from the Maximally $U(1{)}_L$ Supersymmetric Inverse Seesaw
• Phenomenology in supersymmetric neutrinophilic Higgs model with sneutrino dark matter