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Scrutinizing Right-Handed Neutrino Portal Dark Matter With Yukawa Effect
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Analyzing the neutrino Yukawa effect in the freeze-out process of a generic dark matter candidate with right-handed neutrino portal, we identify the parameter regions satisfying the observed dark matter relic density as well as the current Fermi-LAT and H.E.S.S. limits and the future CTA reach on gamma-ray signals. In this scenario the dark matter couples to the Higgs boson at one-loop level and thus could be detected by spin-independent nucleonic scattering for a reasonable range of the relevant parameters.
Forward citations
Cited by 4 Pith papers
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Cosmological Histories in Neutrino Portal Dark Matter
A neutrino portal dark sector with mN < mχ < mϕ can be populated by freeze-out, freeze-in, double freeze-in, or by forming a separate cold dark thermal bath, depending on the two portal couplings.
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Structures of the Massive Vector Boson Propagators at Finite Temperature Illuminated by the Goldstone Equivalence Gauge
At finite temperature, a massive vector boson's longitudinal mode sheds part of its Goldstone component, which reappears as a branch cut that can be approximated as a massless quasi-Goldstone with a computed wave-func...
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Electroweak right-handed neutrino portal dark matter
In neutrino-portal dark matter, ignoring internal dark-sector interactions during freeze-in can underestimate the final relic abundance by 30–95%.
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Effective theory of light Dirac neutrino portal dark matter with observable ${\Delta N_{\rm eff}}$
A dark matter candidate interacting only with right-handed neutrinos is shown to produce ΔNeff ≥ 0.21, testable by future CMB experiments.
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