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arXiv · 2112.08853

Cosmological imprints of non-thermalized dark matter

Quentin Decant·Jan Heisig·Deanna C. Hooper·Laura Lopez-Honorez
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Abstract

Non-thermalized dark matter is a cosmologically viable alternative to the widely studied weakly interacting massive particle. We study the evolution of the dark matter phase-space distributions arising from freeze-in and superWIMP production as well as the combination of both. Utilizing our implementation in CLASS, we investigate the cosmological imprints on the matter power spectrum, constrained by Lyman-$\alpha$ forest observations. For the explicit example of a colored $t$-channel mediator model, we explore the cosmologically allowed parameter space highlighting the interplay of Lyman-$\alpha$ constraints with those from Big Bang Nucleosynthesis and the LHC.

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Quentin Decant, Jan Heisig, Deanna C. Hooper, Laura Lopez-Honorez. 2021-12-16. Cosmological imprints of non-thermalized dark matter. https://arxiv.org/abs/2112.08853

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