Feeble neutrino portal dark matter at neutrino detectors

Abstract

We explore the neutrino portal dark matter (DM) at its minimum of field content having two dark sector particles coupled to a right-handed neutrino. Assuming the feeble nature of their interactions with the standard model (SM) particles, we analyze the freeze-in production of the observed DM relic density characterized by three different categories depending on the major production mechanisms. The portal provides interesting signatures at the neutrino detectors like KamLAND, Super-Kamiokande and IceCube, from a very late decay of the scalar DM to the fermion DM and the SM neutrino. Such neutrino flux spectrum from the cosmic and galactic origins can produce anomalous signals at future experiments.

Version accepted for publication in JCAP

References in corpus (8)

• Secluded WIMP Dark Matter
• Co-Decaying Dark Matter
• Model-Independent Bound on the Dark Matter Lifetime
• Measurement of the Atmospheric ${\nu }_e$ flux in IceCube
• Right-handed sneutrino dark matter in $\mathbf{U}(1{)}^{\prime }$ seesaw models and its signatures at the LHC
• Implications of right-handed neutrinos in $B-L$ extended standard model with scalar dark matter
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• Dark Matter in the Type Ib Seesaw Model
• Diffuse supernova neutrino background with up-to-date star formation rate measurements and long-term multidimensional supernova simulations
• Superheavy Supersymmetric Dark Matter for the origin of KM3NeT Ultra-High Energy signal
• Sterile Neutrino Portal Dark Matter in $\nu$THDM
• Semi-Annihilation of Fermionic Dark Matter
• Secluded Dark Matter in Gauged $B-L$ Model
• 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
• Collider search of light dark matter model with dark sector decay
• A closer look at the seesaw-dark matter correspondence
• Sterile neutrino portals to Majorana dark matter: effective operators and UV completions