# Quark Matter 2018

13-19 May 2018
Venice, Italy
Europe/Zurich timezone
The organisers warmly thank all participants for such a lively QM2018! See you in China in 2019!

## PHENIX results on centrality and collision energy dependent Lévy analysis of HBT correlation functions

15 May 2018, 17:00
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Correlations and fluctuations

### Speaker

Dániel Kincses (Eötvös Loránd University)

### Description

Varying the center of mass energy and the centrality in heavy-ion collisions allows us to investigate different regions of the QCD phase diagram. In our latest measurements at the PHENIX experiment at RHIC, we utilize Lévy-type sources to describe the measured HBT correlation functions at different beam energies and centralities. The different source parameters can yield different information about the source. The scale parameter $R$ is related to the physical size of the source, while the $\lambda$ parameter (the strength of the correlation function) may provide an indirect measurement of in-medium mass modification. The index of stability $\alpha$ is related to one of the critical exponents (the so-called correlation exponent $\eta$), so it may yield information on the nature of the quark-hadron phase transition. In this poster we report the current status of the analysis of the centrality and beam energy dependence of Lévy source parameters in Au+Au collisions from $\sqrt{s_{NN}}=15$ GeV to $\sqrt{s_{NN}}=200$ GeV.

Centralised submission by Collaboration Presenter name already specified Experiment PHENIX

### Primary author

Dániel Kincses (Eötvös Loránd University)