Large-scale Simulations of Antihelium Production in Cosmic-ray Interactions

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 (${}^3\overline{\text{He}}$ and ${}^4\overline{\text{He}}$). 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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References in corpus (4)

• Antideuteron fluxes from dark matter annihilation in diffusion models
• Cosmic Ray Antiprotons at High Energies
• A fussy revisitation of antiprotons as a tool for Dark Matter searches
• Expectations of the Cosmic Antideuteron Flux

Cited by in corpus (6)

• Cosmic antihelium-3 nuclei sensitivity of the GAPS experiment
• Constraints on the antistar fraction in the Solar system neighborhood from the 10-years Fermi Large Area Telescope gamma-ray source catalog
• Reevaluation of the cosmic antideuteron flux from cosmic-ray interactions and from exotic sources
• Cosmic Ray Antihelium from a Strongly Coupled Dark Sector
• Production of light antinuclei in $pp$ collisions by dynamical coalescence and their fluxes in cosmic rays near earth
• Antihelium-3 Sensitivity for the GRAMS Experiment