# Quark Matter 2018

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

## Measurement of the Sixth-order Cumulant of Net-charge Distributions in Au+Au Collisions at √sNN = 200 GeV by the STAR Experiment

May 15, 2018, 5:00 PM
2h 40m
First floor and third floor (Palazzo del Casinò)

### First floor and third floor

#### Palazzo del Casinò

Poster Correlations and fluctuations

### Speaker

Tetsuro Sugiura (University of Tsukuba, Japan)

### Description

In heavy-ion collision experiments, the study of event-by-event fluctuations is a powerful tool to characterize the thermodynamic properties of the hot and dense QCD matter. According to the Lattice QCD calculations, an analytic cross-over exists at small $\mu_{B}$ regions but there is no experimental evidence for the location of predicted cross-over. Experimentally, it is thought that up to the sixth-order cumulant and the ratio to the variance may be the signal of the cross-over. The STAR experiment presented up to the fourth-order cumulant ratios of net-charge and up to the sixth-order of net-proton fluctuations at $\sqrt{s_{NN}}=200$ GeV. However, the fifth and sixth-order cumulant of net-charge have not been presented yet. This poster presents measurements of cumulants from the first- to sixth-order and the ratio to the variance of net-charge using particle species and $p_{T}$ dependent efficiency corrections for Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV during Beam Energy Scan in 2010 and 2011.

Collaboration STAR Presenter name already specified Experiment

### Primary author

Zhenyu Ye (University of Illinois at Chicago)