Entropy Production and Particle Yields in Heavy Ion Collisions at LHC

TL;DR

This paper introduces a thermodynamics-based scheme to calculate entropy production in high-energy heavy ion collisions at LHC, predicting particle yields and analyzing entropy densities up to 14 TeV.

Contribution

It presents a novel continuum thermodynamics formalism for entropy production in heavy ion collisions and provides explicit calculations and predictions at LHC energies.

Findings

Entropy density at LHC energy is 67.8.

Predicted particle yields based on entropy density.

No evidence of asymptotic freedom at current energies.

Abstract

A scheme is proposed for calculating the entropy production in highly transparent colliding systems. The formalism is continuum physical and fully conform with thermodynamics; and the calculation is explicit in entropy production. We have analyzed high energy heavy ion collisions from view point of thermodynamics. Entropy densities are calculated for reactions up 14 TeV energies. Final state particle productions are predicted using particle generating quark and hadron models. We find that at LHC energy the entropy density is 67.8. From this value we could predict particle yields, too. The results show that there is not yet asymptotic freedom.