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Thermally modified sterile neutrino portal dark matter and gravitational waves from phase transition: The Freeze-in case
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Thermally modified sterile neutrino portal dark matter and gravitational waves from phase transition: The Freeze-in case
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We consider the thermal effects into the evaluation of the dark matter production process. With the assistance of the right handed neutrinos, the freeze-in massive particle dark matter production history can be modified by the two-step phase transitions. The kinematic of decay/inverse decay or annihilation processes can be affected by the finite temperature effects as the Universe cools down. The history of the symmetry respected by the model can be revealed by the DM relic abundance evolution processes. The strong first order electroweak phase transition generated gravitational waves can be probed. The number of extra scalars for the Hierarchy problem can be probed through the Higgs off-shell searches at the LHC.
Forward citations
Cited by 3 Pith papers
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Dark Phoenix: dark matter relic from its own decay
A transient post-freeze-out decay window for dark matter, closed by a first-order phase transition that jumps a partner mass, can reduce an overproduced thermal relic to the observed abundance.
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Temperature-dependent DM couplings mediated by a scalar field's VEV that drops after a first-order phase transition allow sufficient early-universe annihilations for the observed relic density while evading current di...
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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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