Hadron production and QGP Hadronization in Pb--Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV

TL;DR

This paper demonstrates that the chemical non-equilibrium statistical hadronization model accurately describes hadron yields in Pb--Pb collisions at 2.76 TeV, revealing universal hadronization conditions at LHC and RHIC.

Contribution

It introduces a comprehensive analysis of hadron yields using the non-equilibrium SHM, providing new insights into QGP hadronization at high energies.

Findings

SHM accurately fits all measured hadron yields

Predictions for unobserved hadron yields and antimatter production

Universal hadronization conditions observed at LHC and RHIC

Abstract

We show that all central rapidity hadron yields measured in Pb--Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV are well described by the chemical non-equilibrium statistical hadronization model (SHM), where the chemically equilibrated QGP source breaks up directly into hadrons. SHM parameters are obtained as a function of centrality of colliding ions, and we compare CERN Large Hadron Collider (LHC) with Brookhaven National Laboratory Relativistic Heavy Ion Collider (RHIC) results. We predict yields of unobserved hadrons and address anti-matter production. The physical properties of the quark--gluon plasma fireball particle source show universality of hadronization conditions at LHC and RHIC.