Astro 2020 Science White Paper: Cosmic-ray Antinuclei as Messengers for Dark Matter. (arXiv:1904.05938v1 [astro-ph.HE])

Astro 2020 Science White Paper: Cosmic-ray Antinuclei as Messengers for Dark Matter. (arXiv:1904.05938v1 [astro-ph.HE])
<a href="http://arxiv.org/find/astro-ph/1/au:+Perez_K/0/1/0/all/0/1">Kerstin Perez</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Doetinchem_P/0/1/0/all/0/1">Philip von Doetinchem</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Aramaki_T/0/1/0/all/0/1">Tsuguo Aramaki</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Boezio_M/0/1/0/all/0/1">Mirko Boezio</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Boggs_S/0/1/0/all/0/1">Steven E. Boggs</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Craig_W/0/1/0/all/0/1">William W. Craig</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fabris_L/0/1/0/all/0/1">Lorenzo Fabris</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Fuke_H/0/1/0/all/0/1">Hideyuki Fuke</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Gahbauer_F/0/1/0/all/0/1">Florian Gahbauer</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hailey_C/0/1/0/all/0/1">Charles J. Hailey</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Ong_R/0/1/0/all/0/1">Rene Ong</a>

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.

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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