Self-interacting dark matter from late decays and the $H_0$ tension
High Energy Physics - Phenomenology
2021-10-25 v1 Cosmology and Nongalactic Astrophysics
Abstract
We investigate a mechanism for the production of self-interacting dark matter based on WIMP-like messenger state decays into dark matter and dark radiation occurring after recombination. Such a transition leads to a mild relaxation of the Hubble tension, and at the same time may resolve the small-scale structure problems of the CDM. We illustrate this mechanism in the Higgs portal dark matter model, which we find to be a promising route.
Keywords
Cite
@article{arxiv.2110.11622,
title = {Self-interacting dark matter from late decays and the $H_0$ tension},
author = {Krzysztof Jodłowski},
journal= {arXiv preprint arXiv:2110.11622},
year = {2021}
}
Comments
4 pages, 4 figures. Contribution to proceedings of The European Physical Society Conference on High Energy Physics (EPS-HEP2021)