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Open AccessArticle

Taming the Energy Rise of the Total Proton-Proton Cross-Section

1
Frankfurt Institute for Advanced Studies (FIAS), 60438 Frankfurt am Main, Germany
2
D.V. Skobeltsyn Institute of Nuclear Physics, Moscow State University, 119992 Moscow, Russia
3
Institute for Theoretical Physics, Goethe-Universität, 60438 Frankfurt am Main, Germany
*
Author to whom correspondence should be addressed.
Universe 2019, 5(5), 106; https://doi.org/10.3390/universe5050106
Received: 1 April 2019 / Revised: 1 May 2019 / Accepted: 4 May 2019 / Published: 7 May 2019
(This article belongs to the Special Issue Interplay of QCD, Cosmology and Astroparticle Physics)
Steep rise of parton densities in the limit of small parton momentum fraction x poses a challenge for describing the observed energy-dependence of the total and inelastic proton-proton cross sections σ p p tot / inel : considering a realistic parton spatial distribution, one obtains a too-strong increase of σ p p tot / inel in the limit of very high energies. We discuss various mechanisms which allow one to tame such a rise, paying special attention to the role of parton-parton correlations. In addition, we investigate a potential impact on model predictions for σ p p tot, related to dynamical higher twist corrections to parton-production processes. View Full-Text
Keywords: total cross-section; multiparton interactions; higher twist effects total cross-section; multiparton interactions; higher twist effects
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Ostapchenko, S.; Bleicher, M. Taming the Energy Rise of the Total Proton-Proton Cross-Section. Universe 2019, 5, 106.

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