The quark-gluon plasma: diagnosis with thermal hadron production from the early history until detailed characterization at high energy colliders

TL;DR

This paper reviews the development and current understanding of quark-gluon plasma formation in relativistic nuclear collisions, emphasizing thermal hadron production and its role in understanding hadronization mechanisms.

Contribution

It provides a comprehensive overview of the experimental and theoretical progress in diagnosing quark-gluon plasma through thermal hadron production at high-energy colliders.

Findings

Thermal particle production reveals details of quark-gluon plasma formation.

Analysis of low transverse momentum particles sheds light on hadronization mechanisms.

The research connects early universe conditions with high-energy collider experiments.

Abstract

In nuclear collisions at relativistic energies, matter is created which resembles closely the matter that filled all space until about 15 microseconds after the big bang. Here we summarize selected aspects of the research that led to the establishment of this new sub-field of physics and briefly describe its current `state of the art' with emphasis on matter creation through thermal particle production. In particular, we will focus on particle production at low transverse momentum and explain how its analysis sheds light on one of the key open questions, i.e. what is the mechanism of hadronization of colored objects such as quarks and gluons.