Imprints of clustering in multiplicity fluctuations

TL;DR

This paper examines how multiplicity fluctuations of charged particles in high-energy nuclear collisions reveal clustering effects and system size dependencies, providing insights into the hadronization process and source finiteness.

Contribution

It introduces a method to relate multiplicity fluctuations to clustering phenomena and system size in relativistic heavy-ion collisions.

Findings

Multiplicity fluctuations depend on the size of the colliding nuclei.

Clustering phenomena influence the observed multiplicity fluctuations.

Finiteness of hadronizing sources affects fluctuation patterns.

Abstract

In this paper, we investigate the multiplicity fluctuations of charged particles observed in high-energy nuclear collisions and relate them to the size of hadronizing systems which happen during such processes. We use the average multiplicities $\langle N\rangle $ and variances $Var\left(N\right)$ of multiplicity distributions of charged particles produced in centrality selected collisions of relativistic heavy-ion nuclei to evaluate the dynamic variable $\Omega$ and study its dependence on the size of colliding nuclei. We connect the observed system-size dependence of multiplicity fluctuations with the clustering phenomena and the finiteness of the hadronizing sources and the thermal bath.