Scalar Neutrino as Asymmetric Dark Matter: Radiative Neutrino Mass and Leptogenesis

Abstract

In the Minimal Supersymmetric Standard Model (MSSM), the scalar neutrino ${\tilde{\nu }}_L$ has odd R parity, yet it has long been eliminated as a dark-matter candidate because it scatters elastically off nuclei through the $Z$ boson, yielding a cross section many orders of magnitude above the experimental limit. We show how it can be reinstated as a dark-matter candidate by splitting the masses of its real and imaginary parts in an extension of the MSSM with scalar triplets. As a result, radiative Majorana neutrino masses are also generated. In addition, decays of the scalar triplets relate the abundance of this asymmetric dark matter to the baryon asymmetry of the Universe through leptogenesis.

9 pages with 4 figures

References in corpus (4)

• Minimal supergravity sneutrino dark matter and inverse seesaw neutrino masses
• Asymmetric Inelastic Inert Doublet Dark Matter from Triplet Scalar Leptogenesis
• Flavoring Monochromatic Neutrino Flux from Dark Matter Annihilation
• Analysis of Leptogenesis in Supersymmetric Triplet Seesaw Model

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• From the trees to the forest: a review of radiative neutrino mass models
• Resurrecting Sneutrino (${\tilde{\nu }}_L$) Dark Matter in light of Neutrino Mass and LUX
• An SO(10) \times SO(10)' model for common origin of neutrino masses, ordinary and dark matter-antimatter asymmetries
• Purely Triplet Seesaw and Leptogenesis within Cosmological Bound, Dark Matter and Vacuum Stability
• Same-sign trileptons as a signal of sneutrino lightest supersymmetric partlcle
• Right-handed sneutrinos as asymmetric DM and neutrino masses from neutrinophilic Higgs bosons
• Quark Seesaw, Dark $U(1)$ symmetry and Baryon-Dark Matter Coincidence