Statistical Origin of Constituent-Quark Scaling in the QGP hadronization

TL;DR

This paper uses a nonextensive statistical Blast-Wave model to explain the constituent-quark scaling in QGP hadronization, linking it to non-equilibrium processes and successfully describing key RHIC observations.

Contribution

It introduces a nonextensive statistical approach within the Blast-Wave model to explain NCQ scaling as a non-equilibrium phenomenon, unifying multiple hadronic observables.

Findings

Successfully describes NCQ scaling and flow phenomena at RHIC.

Provides reference distributions with minimal chi-squared fit.

Links hadron suppression to jet quenching effects.

Abstract

Nonextensive statistics in a Blast-Wave model (TBW) is implemented to describe the identified hadron production in relativistic p+p and nucleus-nucleus collisions. Incorporating the core and corona components within the TBW formalism allows us to describe simultaneously some of the major observations in hadronic observables at the Relativistic Heavy-Ion Collider (RHIC): the Number of Constituent Quark Scaling (NCQ), the large radial and elliptic flow, the effect of gluon saturation and the suppression of hadron production at high transverse momentum (pT) due to jet quenching. In this formalism, the NCQ scaling at RHIC appears as a consequence of non-equilibrium process. Our study also provides concise reference distributions with a least chi2 fit of the available experimental data for future experiments and models.