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Relativistic Freeze-in

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arxiv 1908.05491 v1 pith:DH7ELN7W submitted 2019-08-15 hep-ph

Oleg Lebedev , Takashi Toma This is my paper · ORCID
classification hep-ph
keywords higgsrelativisticportalaccountbose--einsteinchangeconsequentconstraints
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We study production of scalar dark matter via the freeze--in mechanism in the relativistic regime, focussing on the simplest Higgs portal model. We derive the corresponding relativistic reaction rates based on the Bose--Einstein statistics taking into account the thermal mass effects as well as the change in the Higgs degrees of freedom at the electroweak phase transition. The consequent constraints on the Higgs portal coupling are obtained.

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Cited by 1 Pith paper

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  1. Freezing-in Cannibals with Low-reheating Temperature

    hep-ph 2025-06 conditional novelty 6.0 of 10

    Non-instantaneous (low-temperature) reheating combined with 3-to-2 cannibal self-interactions reshapes the freeze-in dark matter parameter space and opens new light-DM regions for future colliders.

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