First results on the event-by-event fluctuations and correlations in Pb-Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV

TL;DR

This paper presents initial findings on event-by-event fluctuations and correlations in Pb-Pb collisions at 2.76 TeV, providing insights into the QGP phase transition and thermalization in heavy-ion collisions.

Contribution

It reports the first results from the ALICE experiment's event-by-event analysis at LHC energies, comparing them with past data and models.

Findings

Charge fluctuations measured and analyzed.

Mean transverse momentum fluctuations observed.

Results compared with theoretical models.

Abstract

Fluctuations of thermodynamic quantities are fundamental for the study of the QGP phase transition. Among several observables calculated on an event-by-event basis, the different measures of the charge and mean transverse momentum fluctuations are of particular interest since they are considered to be indicators of the existence and of the order of this transition as well as of the thermalization in heavy--ion collisions. In this article, we review the first results from the event-by-event physics program of the ALICE experiment at the LHC in Pb--Pb collisions at $\sqrt{s_{NN}} = 2.76$ TeV. The experimental results will be compared to previously published data and available model predictions.