PoS - Proceedings of Science
Volume 395 - 37th International Cosmic Ray Conference (ICRC2021) - DM - Dark Matter
Antihelium-3 fluxes near Earth using data-driven estimates for annihilation cross section
L. Šerkšnytė
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Pre-published on: July 08, 2021
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Antinuclei cosmic rays could provide a smoking gun signal for dark matter as this signal is virtually background free. The study of $^{3}\overline{\rm He}$ cosmic rays requires knowledge of their production, propagation and annihilation. While the former two have been already estimated with data-driven methods, there were no experimental data available on the $^{3}\overline{\rm He}$ inelastic cross section. We measured for the first time the inelastic cross section of $^{3}\overline{\rm He}$ using the ALICE detector itself as a target. To study the effect of $^{3}\overline{\rm He}$ annihilation in the galaxy, the $^{3}\overline{\rm He}$ source functions and annihilation cross sections were implemented in GALPROP.
DOI: https://doi.org/10.22323/1.395.0516
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