Hydrodynamic extension of the two component model for hadroproduction in heavy-ion collisions

TL;DR

This paper extends a two component model with hydrodynamics to better describe charged hadron spectra across all transverse momenta in heavy-ion collisions, suggesting QGP formation as a key factor.

Contribution

It introduces a hydrodynamic extension to the two component model, integrating recent theoretical calculations to improve spectra description in heavy-ion collisions.

Findings

Hierarchy in spectra shape based on system size

Successful description of spectra across all pT ranges

Evidence supporting QGP formation during collisions

Abstract

The dependence of the spectra shape of produced charged hadrons on the size of a colliding system is discussed using a two component model. As a result, the hierarchy by the system-size in the spectra shape is observed. Next, the hydrodynamic extension of the two component model for hadroproduction using recent theoretical calculations is suggested to describe the spectra of charged particles produced in heavy-ion collisions in the full range of transverse momenta, $p_T$. Data from heavy-ion collisions measured at RHIC and LHC are analyzed using the introduced approach and are combined in terms of energy density. The observed regularities might be explained by the formation of QGP during the collision.