Seesaw determination of the dark matter relic density

Abstract

In this article, we show that in the usual type-I seesaw framework, augmented solely by a neutrino portal interaction, the dark matter (DM) relic density can be created through freeze-in in a manner fully determined by the seesaw interactions and the DM particle mass. This simple freeze-in scenario, where dark matter is not a seesaw state, proceeds through slow, seesaw-induced decays of Higgs, $W$ and $Z$ bosons. We identify two scenarios, one of which predicts the existence of an observable neutrino line.

6 pages, 1 figure

References in corpus (6)

• The GERDA experiment for the search of 0νββ decay in ^{76}Ge
• Study of solar and other unknown anti-neutrino fluxes with Borexino at LNGS
• Feeble neutrino portal dark matter at neutrino detectors
• Dark Matter in the Type Ib Seesaw Model
• Neutrino lines from DM decay induced by high-scale seesaw interactions
• Dirac Neutrino Mass Matrix and its Link to Freeze-in Dark Matter

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• CMB signature of non-thermal Dark Matter produced from self-interacting dark sector
• Dark matter produced from neutrinos
• Dark Sector extensions of the Littlest Seesaw in the presence of Primordial Black Holes
• Dark matter freeze-in via a light fermion mediator: forbidden decay and scattering
• Asymmetries in Extended Dark Sectors: A Cogenesis Scenario
• A closer look at the seesaw-dark matter correspondence
• Sterile neutrino portals to Majorana dark matter: effective operators and UV completions
• Cosmological constraints on the decay of heavy relics into neutrinos
• Sterile neutrino dark matter from a TeV Scale Seesaw