Cosmic ray antihelium from a strongly coupled dark sector

Standard Model extensions with a strongly coupled dark sector can induce high-multiplicity states of soft quarks. Such final states trigger extremely efficient antinucleus formation. We show that dark matter annihilation or decay into a strongly coupled sector can dramatically enhance the cosmic-ray...

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Bibliographic Details
Published in:Physical review. D 2023-06, Vol.107 (12), Article 123035
Main Authors: Winkler, Martin Wolfgang, Luque, Pedro De La Torre, Linden, Tim
Format: Article
Language:English
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Summary:Standard Model extensions with a strongly coupled dark sector can induce high-multiplicity states of soft quarks. Such final states trigger extremely efficient antinucleus formation. We show that dark matter annihilation or decay into a strongly coupled sector can dramatically enhance the cosmic-ray antinuclei flux-by six orders of magnitude in the case of 4He. In this work, we argue that the tentative 3He and 4He events reported by the AMS-02 Collaboration could be the first sign of a strongly coupled dark sector observed in nature.
ISSN:2470-0010
2470-0029
2470-0029
DOI:10.1103/PhysRevD.107.123035