A new heuristic estimates photonuclear reactions' contribution to muon numbers in extensive air showers with roughly 10% absolute error over wide parameter ranges.
Photoproduction total cross section and shower development
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abstract
The total photoproduction cross section at ultra-high energies is obtained using a model based on QCD minijets and soft-gluon resummation and the ansatz that infrared gluons limit the rise of total cross sections. This cross section is introduced into the Monte Carlo system AIRES to simulate extended air-showers initiated by cosmic ray photons. The impact of the new photoproduction cross section on common shower observables, especially those related to muon production, is compared with previous results.
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2025 1verdicts
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Readdressing the contribution of photonuclear reactions to the muon content of extensive air showers: a heuristic approach
A new heuristic estimates photonuclear reactions' contribution to muon numbers in extensive air showers with roughly 10% absolute error over wide parameter ranges.