Proton-proton cross-sections: the interplay between density and radius
High Energy Physics - Phenomenology
2015-05-28 v2
Abstract
We argue that there are two mechanisms responsable for the growth of high energy cross-sections - \sigma_{tot} and \sigma_{el}, say - in pp collisions. One is by the increase of matter \emph{density}, resulting in the black disk saturation. The other is by exclusively radial expansion affecting the periphery of the overlap area. Within this simple model we can reproduce all available data in pp from ISR to LHC. In order to achieve a fast growth in the very high energy cosmic ray energies, we propose a fast black disk saturation followed by the dominance of geometric scaling (GS).
Cite
@article{arxiv.1107.0912,
title = {Proton-proton cross-sections: the interplay between density and radius},
author = {R. Conceição and J. Dias de Deus and M. Pimenta},
journal= {arXiv preprint arXiv:1107.0912},
year = {2015}
}