Volume 398 -
The European Physical Society Conference on High Energy Physics (EPS-HEP2021) -
T02: Cosmology
Self-interacting dark matter from late decays and the H0 tension
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Pre-published on:
January 12, 2022
Published on:
May 12, 2022
Abstract
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: https://doi.org/10.22323/1.398.0115
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Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright owned by the author(s) under the term of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.