Abstract
Physics content of the QGSJET-III model is discussed, paying a particular attention to the treatment of higher-twist corrections to hard parton scattering processes, corresponding to rescattering of produced \(s\)-channel partons. Consequences for the energy dependence of both interaction cross sections and particle production are analyzed. Further, the implementation of the pion exchange mechanism in the model is described, concentrating on its relevance to the data of the LHCf experiment.
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Notes
Here we define diffractive processes as those which produce large rapidity gaps in the secondary production patterns. Since the intercepts of secondary Regge trajectories are smaller than unity, \(\mathbb{RRP}\) processes do not produce such signatures and should be regarded as a special class of nondiffractive interactions.
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Funding
This work was supported in part by the Deutsche Forschungsgemeinschaft (project no. 465275045).
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Ostapchenko, S. QGSJET-III Model: Novel Features. Phys. Atom. Nuclei 84, 1017–1025 (2021). https://doi.org/10.1134/S1063778821130238
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DOI: https://doi.org/10.1134/S1063778821130238