Systematic study of hadrons and their quark-component nuclear modification factors

TL;DR

This paper investigates the relationship between hadron and quark nuclear modification factors in nucleus-nucleus collisions at LHC energies, confirming flavor and mass ordering phenomena across various collision conditions.

Contribution

It provides a systematic analysis of the connection between hadron and quark modification factors and confirms the existence of mass ordering at the hadron level using the PACIAE model.

Findings

Mass ordering at hadron level in nuclear modification factors is confirmed.

The phenomena are consistent across different rapidity, centrality, energy, and system size.

The study supports further theoretical and experimental investigation.

Abstract

We have systematically studied the connection between hadron and its quark component nuclear modification factors and the flavor (mass) ordering at both parton and hadron levels in the nucleus-nucleus collisions at the LHC energies by the PACIAE model. It turns out that these two physical phenomena explored in our last publication (J. Phys. G 49 065104, 2022) are generally held, irrespective of the rapidity, centrality, reaction energy, and the collision system size. The mass ordering at hadron level in nuclear modification factor seems to be really existed, which should be studied further both theoretically and experimentally.