# Quark Matter 2019 - the XXVIIIth International Conference on Ultra-relativistic Nucleus-Nucleus Collisions

3-9 November 2019
Wanda Reign Wuhan Hotel
Asia/Shanghai timezone

## Charged-particle production as function of event multiplicity in ALICE

4 Nov 2019, 17:40
20m
Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

#### Wanda Han Show Theatre & Wanda Reign Wuhan Hotel

Poster Presentation Small systems

### Speaker

Patrick Huhn (Johann-Wolfgang-Goethe Univ. (DE))

### Description

The ALICE experiment at the LHC is designed to investigate the properties of the Quark-Gluon Plasma by studying high-energy pp, p--Pb, Pb--Pb and Xe--Xe collisions. Medium effects like parton energy loss can be examined by measuring the production of charged particles and their nuclear modification at high transverse momentum ($\textit{p}_{\text{T}}$).
In this poster, we report on charged-particle $\textit{p}_{\text{T}}$-spectra as a function of the event multiplicity. Detector efficiency and resolution effects are corrected for using an iterative unfolding procedure. Particle production is compared for different collision energies and systems.
In particular, we focus on investigating the energy and system size dependence of the unfolded $\textit{p}_{\text{T}}$-spectra as a function of event multiplicity by means of the evolution of the inverse slope parameter of the $\textit{p}_{\text{T}}$-spectra at high $\textit{p}_{\text{T}}$. All results are compared with QCD-inspired models.

### Primary author

Patrick Huhn (Johann-Wolfgang-Goethe Univ. (DE))