Ultraheavy Dark Matter and WIMPs Production aided by Primordial Black Holes
Giorgio Arcadi, Manfred Lindner, Jacinto P. Neto, Farinaldo S. Queiroz

TL;DR
This paper explores how primordial black holes can produce ultraheavy dark matter and WIMPs, affecting relic density predictions and expanding the viable mass range for dark matter particles.
Contribution
It demonstrates that Hawking evaporation from primordial black holes can generate ultraheavy dark matter and analyzes their impact on relic density in non-standard cosmologies.
Findings
Hawking evaporation can produce dark matter above 10^{12} GeV.
Primordial black holes influence relic density through entropy injection.
Heavy dark matter particles above 10 TeV can match observed relic density.
Abstract
The unitary bound restricts thermal relics to be lighter than TeV. This work investigates the production of ultraheavy dark matter and WIMPs in the presence of primordial black holes. Firstly, we describe how Hawking evaporation can produce ultraheavy dark matter with masses above GeV in radiation and matter-domination eras. Later, we assess how primordial black holes that induce a non-standard cosmology impact the predicted relic density of a thermal relic and explore the interplay between them, considering the restrictions arising from entropy injection due to the evaporation of primordial black holes. Considering a concrete B-L model, where the dark matter is a Dirac particle, we obtain the correct relic density for various freeze-out scenarios and show that a dark matter particle can nicely reproduce the correct relic density in agreement with current limits with…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsDark Matter and Cosmic Phenomena · Cosmology and Gravitation Theories · Astronomy and Astrophysical Research
