Interacting color strings as the origin of the liquid behavior of the quark-gluon plasma

Abstract

We study the radial distribution function of the color sources (strings) formed in hadronic collisions and the requirements to obtain a liquid. As a repulsive interaction is needed, we incorporate a concentric core in the strings as well as the probability that a string allows core-core overlaps. We find systems where the difference between the gas-liquid and confined-deconfined phase transition temperatures is small. This explains the experimentally observed liquid behavior of the quark-gluon plasma above the confined-deconfined transition temperature.

7 pages, 4 figures, It matches the published version-typos corrected

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• Entropy and Heat Capacity of the transverse momentum distribution for pp collisions at RHIC and LHC energies
• Nonextensivity and temperature fluctuations of the Higgs boson production
• Viscosity of non equilibrium hot $\&$ dense QCD drop formed at LHC
• Structure of the medium formed in heavy ion collisions