Relating multihadron production in hadronic and nuclear collisions

TL;DR

This paper presents a model combining constituent quark dynamics and hydrodynamics to relate particle production in nuclear and hadronic collisions, successfully reproducing existing data and predicting outcomes at LHC energies.

Contribution

It introduces a unified model linking multihadron production in nuclear and hadronic collisions, incorporating energy dissipation and particle types, and provides predictions for future collider experiments.

Findings

Model accurately reproduces existing collision data

Reveals interrelations between different collision types

Provides predictions for LHC energy measurements

Abstract

The energy-dependence of charged particle mean multiplicity and pseudorapidity density at midrapidity measured in nucleus-nucleus and (anti)proton-proton collisions are studied in the entire available energy range. The study is performed using a model, which considers the multiparticle production process according to the dissipating energy of the participants and their types, namely a combination of the constituent quark picture together with Landau relativistic hydrodynamics. The model reveals interrelations between the variables under study measured in nucleus-nucleus and nucleon-nucleon collisions. Measurements in nuclear reactions are shown to be well reproduced by the measurements in (anti)proton-proton interactions common and the corresponding fits are presented. Different observations in other types of collisions are discussed in the framework of the proposed model. Predictions are made for measurements at the forthcoming LHC energies.