p-air production cross-section and uncorrelated mini-jets processes in pp-scattering

Abstract

For the p-air production cross-section, we use a Glauber formalism which inputs the pp inelastic cross-section from a mini-jet model embedded in a single-channel eikonal expression, which provides the needed contribution of uncorrelated processes. It is then shown that current LO parton density functions for the pp mini-jet cross-sections, with a rise tempered by collinearity induced by soft gluon re-summation, are well suited to reproduce recent cosmic ray results. By comparing results for GRV, MRST72 and MSTW parametrizations, we estimate the uncertainty related to the low-x behavior of these densities.

arXiv comment7 pages, 5 figures, to appear in Proceedings of ISMD2014, 8-12 September 2014, Bologna, Italy

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• Introduction to the physics of the total cross-section at LHC: A Review of Data and Models