Sensitivity of the GAPS Experiment to Low-energy Cosmic-ray Antiprotons
Abstract
The General Antiparticle Spectrometer (GAPS) is an upcoming balloon mission to measure low-energy cosmic-ray antinuclei during at least three ~35-day Antarctic flights. With its large geometric acceptance and novel exotic atom-based particle identification, GAPS will detect ~500 cosmic antiprotons per flight and produce a precision cosmic antiproton spectrum in the kinetic energy range of ~0.07-0.21 GeV/n at the top of the atmosphere. With these high statistics extending to lower energies than any previous experiment, and with complementary sources of experimental uncertainty compared to traditional magnetic spectrometers, the GAPS antiproton measurement will be sensitive to dark matter, primordial black holes, and cosmic ray propagation. The antiproton measurement will also validate the GAPS antinucleus identification technique for the antideuteron and antihelium rare-event searches. This analysis demonstrates the GAPS sensitivity to cosmic-ray antiprotons using a full instrument simulation and event reconstruction, and including solar and atmospheric effects.
Keywords
Cite
@article{arxiv.2206.12991,
title = {Sensitivity of the GAPS Experiment to Low-energy Cosmic-ray Antiprotons},
author = {Field Rogers and Tsuguo Aramaki and Mirko Boezio and Steven Boggs and Valter Bonvicini and Gabriel Bridges and Donatella Campana and William W. Craig and Philip von Doetinchem and Eric Everson and Lorenzo Fabris and Sydney Feldman and Hideyuki Fuke and Florian Gahbauer and Cory Gerrity and Charles J. Hailey and Takeru Hayashi and Akiko Kawachi and Masayoshi Kozai and Alex Lenni and Alexander Lowell and Massimo Manghisoni and Nadir Marcelli and Brent Mochizuki and Isaac Mognet and Kazuoki Munakata and Riccardo Munini and Yusuke Nakagami and Jerome Olson and Rene Ong and Guiseppe Osteria and Kerstin M. Perez and Sean Quinn and Valerio Re and Elisa Riceputi and Brandon Roach and Jaime Ryan and Nathan Saffold and Valentina Scotti and Yuki Shimizu and Roberta Sparvoli and Achim Stoessl and Alessio Tiberio and Elena Vannuccini and Takuya Wada and Mengjiao Xiao and Masahiro Yamatani and Kelsey Yee and Atsumasa Yoshida and Tetsuya Yoshida and Gianluigi Zampa and Jiancheng Zeng and Jeffrey Zweerink},
journal= {arXiv preprint arXiv:2206.12991},
year = {2022}
}
Comments
11 pages, 9 figures, revision updated with addition of Figure 5 and slight changes in the text to match the version accepted by Astroparticle Physics