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Self-interacting dark matter from late decays and the H0 tension
2022
Proceedings of The European Physical Society Conference on High Energy Physics — PoS(EPS-HEP2021)
unpublished
Preserved Fulltext
We study the production mechanism of self-interacting dark matter based on decays of a messenger WIMP-like state into dark matter and dark radiation taking place after the recombination. Such transition leads to a mild relaxation of the Hubble tension while simultaneously having the potential of addressing small-scale structure problems of ΛCDM. We illustrate the mechanism within a Higgs portal dark matter model which we find to be a promising avenue.
doi:10.22323/1.398.0115
fatcat:cf6vljwpjvggrmtf23ceirf4la