Large-scale simulations of antihelium production in cosmic-ray interactions

Anirvan Shukla, Amaresh Datta, Philip von Doetinchem, Diego-Mauricio Gomez-Coral, and Carina Kanitz
Phys. Rev. D 102, 063004 – Published 10 September 2020

Abstract

The possibility of antihelium production in interaction of cosmic rays with the interstellar gas is studied using large-scale Monte Carlo simulations. For this purpose, an energy-dependent coalescence mechanism developed previously is extended to estimate the production of light antinuclei (He¯3 and He¯4). The uncertainty in the coalescence parameter and its effect on the expected antiparticle flux is also investigated. The simulated background antihelium fluxes are found to be lower than the fluxes predicted by simplified models using numerical scaling techniques.

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  • Received 23 June 2020
  • Accepted 17 August 2020

DOI:https://doi.org/10.1103/PhysRevD.102.063004

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Gravitation, Cosmology & AstrophysicsNuclear Physics

Authors & Affiliations

Anirvan Shukla*, Amaresh Datta, Philip von Doetinchem, and Diego-Mauricio Gomez-Coral

  • Department of Physics and Astronomy, University of Hawai’i at Mānoa, 2505 Correa Road, Honolulu, Hawaii 96822, USA

Carina Kanitz

  • Erlangen Center for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erwin-Rommel-Str. 1, 91058 Erlangen, Germany

  • *anirvan@hawaii.edu

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Issue

Vol. 102, Iss. 6 — 15 September 2020

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