Hadron Freeze-out and QGP Hadronization

TL;DR

This paper investigates the properties of hadron emission from a deconfined quark-gluon plasma in high-energy nuclear collisions, analyzing particle spectra and freeze-out conditions to understand QGP hadronization.

Contribution

It provides a detailed analysis of freeze-out parameters and physical conditions, supporting the direct hadronization from a quark-gluon plasma phase.

Findings

Hadron abundances and spectra indicate a thermally equilibrated, deconfined source.

Freeze-out parameters align with expectations for QGP hadronization.

Properties such as pressure, energy, entropy, and strangeness are consistent with direct hadron emission from QGP.

Abstract

Abundances and $m_\bot$-spectra of strange and other hadronic particles emanating from central 158-200 A GeV reactions between nuclei are found to originate from a thermally equilibrated, deconfined source in chemical non-equilibrium. Physical freeze-out parameters and physical conditions (pressure, specific energy, entropy, and strangeness) are evaluated. Five properties of the source we obtain are as expected for direct hadron emission (hadronization) from a deconfined quark-gluon plasma phase.