On Distributions of Emission Sources and Speed of Sound in Proton-proton (Proton-antiproton) Collisions

Abstract

The revised (three-source) Landau hydrodynamic model is used in this paper to study the (pseudo)rapidity distributions of charged particles produced in proton-proton and proton-antiproton collisions at high energies. The central source is assumed to contribute with a Gaussian function which covers the rapidity distribution region as wide as possible. The target and projectile sources are assumed to emit isotropically particles in their respective rest frames. The model calculations obtained with a Monte Carlo method are fitted to the experimental data over an energy range from 0.2 to 13 TeV. The values of the squared speed-of-sound parameter in different collisions are then extracted from the width of the rapidity distributions.

14 pages, 3 figures. Major Changes. Advances in High Energy Physics, in press. arXiv admin note: text overlap with arXiv:1509.08603

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Cited by in corpus (2)

• Searching for minimum in dependence of squared speed-of-sound on collision energy
• On the Square Speed of Sound in High-Energy Collisions: Range of Values and How to Understand It