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Cosmic ray interactions in the atmosphere: QGSJET-III and other models

Sergey Ostapchenko

SciPost Phys. Proc. 13, 004 (2023) · published 28 September 2023

Proceedings event

21st International Symposium on Very High Energy Cosmic Ray Interactions


The physics content of the QGSJET-III Monte Carlo generator of high energy hadronic collisions is discussed. New theoretical approaches implemented in QGSJET-III are addressed in some detail and a comparison to alternative treatments of other cosmic ray interaction models is performed. Calculated characteristics of cosmic ray-induced extensive air showers are presented and differences between the respective results of QGSJET-III and other models are analyzed. In particular, it is demonstrated that those differences are partly caused by severe deficiencies of the other interaction models.

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