TY - JOUR
T1 - Searching for cosmic antihelium nuclei with the GAPS experiment
AU - GAPS Collaboration
AU - Stoessl, A.
AU - Aramaki, T.
AU - Bird, R.
AU - Boezio, M.
AU - Boggs, S. E.
AU - Bonvicini, V.
AU - Campana, D.
AU - Craig, W. W.
AU - Everson, E.
AU - Fabris, L.
AU - Fuke, H.
AU - Gahbauer, F.
AU - Garcia, I.
AU - Gerrity, C.
AU - Hailey, C. J.
AU - Hayashi, T.
AU - Kato, C.
AU - Kawachi, A.
AU - Kobayashi, S.
AU - Kozai, M.
AU - Lenni, A.
AU - Lowell, A.
AU - Manghisoni, M.
AU - Marcelli, N.
AU - Mognet, S. A.I.
AU - Munakata, K.
AU - Munini, R.
AU - Nakagami, Y.
AU - Olson, J.
AU - Ong, R. A.
AU - Osteria, G.
AU - Perez, K.
AU - Quinn, S.
AU - Re, V.
AU - Riceputi, E.
AU - Roach, B.
AU - Rogers, F.
AU - Ryan, J. A.
AU - Saffold, N.
AU - Scotti, V.
AU - Shimizu, Y.
AU - Sonzogni, M.
AU - Sparvoli, R.
AU - Stoessl, A.
AU - Tiberio, A.
AU - Vannuccini, E.
AU - von Doetinchem, P.
AU - Wada, T.
AU - Xiao, M.
AU - Yamatami, M.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons.
PY - 2022/3/18
Y1 - 2022/3/18
N2 - At low energies, cosmic antideuterons and antihelium provide an ultra-low background signature of dark matter annihilation, decay, and other beyond the Standard Model phenomena. The General Antiparticle Spectrometer (GAPS) is an Antarctic balloon experiment designed to search for low-energy (0.1−0.3 GeV/n) antinuclei, and is planned to launch in the austral summer of 2022. While optimized for an antideuteron search, GAPS also has unprecedented capabilites for the detection of low-energy antihelium nuclei, utilizing a novel detection technique based on the formation, decay, and annihilation of exotic atoms. The AMS-02 collaboration has recently reported several antihelium nuclei candidate events, which sets GAPS in a unique position to set constraints on the cosmic antihelium flux in an energy region which is essentially free of astrophysical background. In this contribution, we illustrate the capabilities of GAPS to search for cosmic antihelium-3 utilizing complete instrument simulations, event reconstruction, and the inclusion of atmospheric effects. We show that GAPS is capable of setting unprecedented limits on the cosmic antihelium flux, opening a new window on exotic cosmic physics.
AB - At low energies, cosmic antideuterons and antihelium provide an ultra-low background signature of dark matter annihilation, decay, and other beyond the Standard Model phenomena. The General Antiparticle Spectrometer (GAPS) is an Antarctic balloon experiment designed to search for low-energy (0.1−0.3 GeV/n) antinuclei, and is planned to launch in the austral summer of 2022. While optimized for an antideuteron search, GAPS also has unprecedented capabilites for the detection of low-energy antihelium nuclei, utilizing a novel detection technique based on the formation, decay, and annihilation of exotic atoms. The AMS-02 collaboration has recently reported several antihelium nuclei candidate events, which sets GAPS in a unique position to set constraints on the cosmic antihelium flux in an energy region which is essentially free of astrophysical background. In this contribution, we illustrate the capabilities of GAPS to search for cosmic antihelium-3 utilizing complete instrument simulations, event reconstruction, and the inclusion of atmospheric effects. We show that GAPS is capable of setting unprecedented limits on the cosmic antihelium flux, opening a new window on exotic cosmic physics.
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M3 - Conference article
AN - SCOPUS:85133595940
SN - 1824-8039
VL - 395
JO - Proceedings of Science
JF - Proceedings of Science
M1 - 499
T2 - 37th International Cosmic Ray Conference, ICRC 2021
Y2 - 12 July 2021 through 23 July 2021
ER -