Asymptotic Scenarios for the Proton's Central Opacity: An Empirical Study
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Amer Inst Physics
AIP Publishing
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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 (p) over bar 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.
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Diffraction 2014: International Workshop On Diffraction In High-energy Physics. Melville: Amer Inst Physics, v. 1654, 4 p., 2015.
