Antihelium-3 fluxes near Earth using data-driven estimates for annihilation cross section

S. Acharya, S. Basu, P. Christiansen, O. Matonoha, A.F. Nassirpour, A. Ohlson, A. Oskarsson, T. Richert, O.V. Rueda, D. Silvermyr, N. Zurlo, ALICE Collaboration

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review


Antinuclei found in cosmic rays could provide a smoking gun signal for dark matter as this signal is virtually background free. The study of 3He cosmic rays requires the knowledge of their production, propagation in the galaxy and annihilation cross-section. While the former two have been already estimated with data-driven methods, there were no experimental data available for the 3He inelastic cross section. We measured for the first time the inelastic cross section of 3He using the ALICE detector itself as a target. To study the effect of 3He annihilation in the galaxy and estimate the transparency of the galaxy, the 3He source functions and annihilation cross sections were implemented in GALPROP. © Copyright owned by the author(s) under the terms of the Creative Commons.
Titel på värdpublikation37th International Cosmic Ray Conference (ICRC2021) - GAI - Gamma Ray Indirect
StatusPublished - 2022
Evenemang37th International Cosmic Ray Conference - Online, Berlin, Tyskland
Varaktighet: 2021 juli 122021 juli 23
Konferensnummer: 37


NamnProceedings of Science
FörlagSissa Medialab Srl
ISSN (tryckt)1824-8039


Konferens37th International Cosmic Ray Conference
Förkortad titelICRC2021

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