Gluon saturation and entropy production in proton proton collisions

TL;DR

This paper explores how gluon saturation in high-energy proton-proton collisions enables the definition of a thermodynamical entropy related to gluon production, linking saturation effects with entropy and multiplicity.

Contribution

It introduces a novel thermodynamical entropy framework based on gluon saturation effects in high-energy collisions, connecting saturation scale with entropy calculations.

Findings

Entropy correlates with gluon multiplicity.

Saturation scale acts like a gluon mass influencing entropy.

Thermodynamical relations apply to gluon production processes.

Abstract

We study properties of high energy factorisable gluon densities focusing on saturation effects. In particular we show that the property of saturation of unintegrated gluon density allows for introduction of thermodynamical entropy associated with production of gluons. This is due to the observation that saturation scale acts like a mass of a gluon which related with temperature via thermodynamical relations allows for calculations of entropy. We also show that obtained entropy behaves like multiplicity of produced gluons.