Gamma-Ray Energy Spectra through Decays of Neutral Pions Produced in Proton-Proton Interactions

Details Gamma-Ray Energy Spectra through Decays of Neutral Pions Produced in Proton-Proton Interactions Gamma-Ray Energy Spectra through Decays of Neutral Pions Produced in Proton-Proton Interactions

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003icrc....4.2297h&link_type=abstract

Proceedings of the 28th International Cosmic Ray Conference. July 31-August 7, 2003. Trukuba, Japan. Under the auspices of the I

Physics

Scientific paper

The accuracy of different parameterisations of neutral pion production in proton-proton collisions is investigated based on analyses of accelerator measurements of differential and integrated total cross sections. The energy spectra of gamma-rays from the decay of secondary particles produced by interactions of cosmic-ray protons with ambient gas is calculated over wide energy range for different primary spectra of protons. It is found that a proton flux with a spectral index α = 2.4 ˜ 2.6 is appropriate to repro duce the GeV bump in the diffuse γ -ray flux.

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