# Net-baryon fluctuations measured with ALICE at the CERN LHC

## TL;DR

This paper presents the first measurements of net-proton fluctuations in lead-lead collisions at the LHC, demonstrating ALICE's capabilities for fluctuation analysis and setting the stage for future higher-order cumulant studies.

## Contribution

It provides the first experimental results on event-by-event net-proton fluctuations at the LHC and showcases the analysis technique for second and higher order cumulants.

## Key findings

- First measurement of net-proton fluctuations at LHC
- Demonstrates ALICE's particle identification for fluctuation studies
- Establishes methodology for higher order cumulant analysis

## Abstract

First experimental results are presented on event-by-event net-proton fluctuation measurements in Pb- Pb collisions at $\sqrt{s_{NN}}$ = 2.76 TeV, recorded by the ALICE detector at the CERN LHC. The ALICE detector is well suited for such studies due to its excellent particle identification capabilities and large acceptance, which is crucial for fluctuation analysis. The studies are focussed on second order cumulants, but the analysis technique used is more general and will be applied, in the near future, also to higher order cumulants.