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Percolation and cosmic ray physics above 1017eV

P. Brogueira, J. Dias de Deus, M. C. Espirito Santo, M. Pimenta

hep-pharXiv:hep-ph/0511279

Abstract

We argue that the energy dependence of the average position of the shower maximum, Xmax, and of the number of produced muons, Nμ, can be explained by a change, around 1017eV, in the energy dependence of the inelasticity K, which decreases with the energy above the string percolation threshold.

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