Dark matter origins of neutrino masses

Abstract

We propose a simple scenario that directly connects the dark matter (DM) and neutrino mass scales. Based on an interaction between the DM particle $\chi$ and the neutrino $\nu$ of the form $\chi \chi \nu \nu /{\Lambda }^2$, the DM annihilation cross section into the neutrino is determined and a neutrino mass is radiatively induced. Using the observed neutrino mass scale and the DM relic density, the DM mass and the effective scale $\Lambda$ are found to be of the order MeV and GeV, respectively. We construct an ultraviolet-complete toy model based on the inverse seesaw mechanism which realizes this potential connection between DM and neutrino physics.

arXiv comment4 pages, 3 figures. V2: comments on CMB constraints corrected, main conclusions unchanged. V3: clarifications added, version accepted by PRD

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• Interplay between neutrino and gravity portals for FIMP dark matter
• Phenomenology of the Generalised Scotogenic Model with Fermionic Dark Matter
• Minimal Seesaw extension for Neutrino Mass and Mixing, Leptogenesis and Dark Matter: FIMPzillas through the Right-Handed Neutrino Portal
• Probing massless and massive gravitons via entanglement in a warped extra dimension
• Dark Radiative Inverse Seesaw Mechanism
• Neutrinoless Double-$\beta$ Decay with Nonstandard Majoron Emission
• Dark Matter in the Type Ib Seesaw Model
• Dark side of the Seesaw
• Effective Theory for Electroweak Doublet Dark Matter
• Inverse Seesaw and Portal Dark Matter
• Novel modulus stabilization mechanism in higher dimensional f(R) Gravity
• Probing Dark Sector Particles Coupling to Neutrinos with Double Beta Decay
• Radiative neutrino masses: A window to new physics