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arXiv · 2211.00025

Cosmic Ray Antihelium from a Strongly Coupled Dark Sector

Martin Wolfgang Winkler·Pedro De La Torre Luque·Tim Linden
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Abstract

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 ${^4\overline{\text{He}}}$. In this work, we argue that the tentative ${^3\overline{\text{He}}}$ and ${^4\overline{\text{He}}}$ events reported by the AMS-02 collaboration could be the first sign of a strongly coupled dark sector observed in nature.

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Martin Wolfgang Winkler, Pedro De La Torre Luque, Tim Linden. 2022-10-31. Cosmic Ray Antihelium from a Strongly Coupled Dark Sector. https://doi.org/10.1103/physrevd.107.123035

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