Deuteron and antideuteron production simulation in cosmic-ray interactions

2018/06/25 by D. M. Goméz Coral, Diego-Mauricio Gomez-Coral, Arturo Menchaca Rocha +6
Physics and Astronomy · #Astronomy #COSMIC cancer database #Cosmic ray #Dark Matter and Cosmic Phenomena #Deuterium #Neutrino Physics Research #Nuclear physics #Particle physics theoretical and experimental studies #Physics #Production (economics) #astro-ph.HE #hep-ph #nucl-th

paper · pdf · doi:10.1103/physrevd.98.023012

published as Phys. Rev. D 98, 023012 2018

arxiv created 2018/06/25 · openalex publication_date 2018/07/12 · arxiv updated 2018/07/26 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

Abstract

The study of the cosmic-ray deuteron and antideuteron flux is receiving increasing attention in current astrophysics investigations. For both cases, an important contribution is expected from the nuclear interactions of primary cosmic rays with intergalactic matter. In this work, deuteron and antideuteron production from 20 to 2.6\ifmmode×\else\texttimes\fi10⁷ GeV beam energy in p+p and p+A collisions were simulated using EPOS-LHC and Geant4's FTFP-BERT Monte Carlo models by adding an event-by-event coalescence model afterburner. These estimates depend on a single parameter (p₀) obtained from a fit to the data. The p₀ for deuterons in this wide energy range was evaluated for the first time. It was found that p₀ for antideuterons is not a constant at all energies as previous works suggested and, as a consequence, the antideuteron production cross section can be at least 20 times smaller in the low-collision-energy region than earlier estimations.

Citations

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