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Title: Asymptotic scenarios for the proton’s central opacity: An empirical study

We present a model-independent analysis of the experimental data on the ratio X between the elastic and total cross-sections from pp and p{sup ¯}p scattering in the c.m. energy interval 5 GeV - 8 TeV. Using a novel empirical parametrization for that ratio as a function of the energy and based on theoretical and empirical arguments, we investigate three distinct asymptotic scenarios: either the black-disk (BD) limit or scenarios above and below that limit. Our analysis favors a scenario below the BD, with asymptotic ratio X = 0.36 ± 0.08.
Authors:
 [1] ; ;  [2]
  1. Instituto de Física Teórica, Universidade Estadual Paulista, UNESP, CEP 01140-070, São Paulo, SP (Brazil)
  2. Instituto de Física Gleb Wataghin, Universidade Estadual de Campinas, UNICAMP, CEP 13083-859, Campinas, SP (Brazil)
Publication Date:
OSTI Identifier:
22391359
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1654; Journal Issue: 1; Conference: DIFFRACTION 2014: International Workshop on Diffraction in High-Energy Physics, Primosten (Croatia), 10-16 Sep 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ASYMPTOTIC SOLUTIONS; ELASTIC SCATTERING; ENERGY DEPENDENCE; GEV RANGE; OPACITY; PARTICLE STRUCTURE; PROTON-ANTIPROTON INTERACTIONS; PROTON-PROTON INTERACTIONS; PROTONS; TEV RANGE; TOTAL CROSS SECTIONS