2021/12/16 by Quentin Decant, Jan Heisig, Decant, Quentin +5
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Particle physics theoretical and experimental studies #Cosmology and Gravitation Theories
paper · pdf · doi:10.48550/arxiv.2112.08853
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-α 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-α constraints with those from Big Bang Nucleosynthesis and the LHC.