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 (1)

• Cosmic antihelium-3 nuclei sensitivity of the GAPS experiment