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Astro 2020 Science White Paper: Cosmic-ray Antinuclei as Messengers for Dark Matter

2019/04/11 by K. Perez, P. von Doetinchem, Perez, Kerstin +19
Physics and Astronomy · #Atomic and Subatomic Physics Research #Dark Matter and Cosmic Phenomena #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Particle physics theoretical and experimental studies #Space Physics (physics.space-ph)

paper · pdf · doi:10.48550/arxiv.1904.05938

openalex publication_date 2019/04/11 · openalex created_date 2019/04/25 · openalex updated_date 2026/07/28

Abstract

The origin of dark matter is a driving question of modern physics. Low-energy antideuterons provide a "smoking gun" signature of dark matter annihilation or decay, essentially free of astrophysical background. Low-energy antiprotons are a vital partner for this analysis, and low-energy antihelium could provide further discovery space for new physics. In the coming decade, AMS-02 will continue accumulating the large statistics and systematic understanding necessary for it to probe rare antinuclei signatures, and GAPS, which is the first experiment optimized specifically for low-energy cosmic antinuclei, will begin several Antarctic balloon campaigns. The connection of cosmic-ray antinuclei and dark matter is reviewed and the outlook in light of experimental progress is presented.

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