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!

Investigating correlated fluctuations of conserved charges with cross-cumulants and net-lambda fluctuations in Pb-Pb collisions at ALICE

May 14, 2018, 4:50 PM
Sala Perla, 1st Floor (Palazzo del Casinò)

Sala Perla, 1st Floor

Palazzo del Casinò

Parallel Talk Correlations and fluctuations Correlations and fluctuations


Alice Ohlson (Ruprecht Karls Universitaet Heidelberg (DE))


The fluctuations of conserved charges - such as electric charge, strangeness, or baryon number - in ultrarelativistic heavy-ion collisions provide insights into the properties of the hot and dense matter produced as well as the QCD phase diagram. They can be related to the moments of the multiplicity distributions of identified particles. We extend the previous and ongoing measurements of the cumulants of the net-pion, net-kaon, and net-proton distributions by investigating the correlated fluctuations of identified particles.
We present the first measurements with the ALICE detector of net-lambda fluctuations and of the off-diagonal cumulants between net-proton, net-pion and net-kaon distributions in Pb-Pb collisions. The results are obtained with the Identity Method, which, in particular, is applied in a novel way to account for the combinatoric background in the net-lambda analysis. The net-lambda fluctuations are compared with the corresponding net-proton and net-kaon results, previously measured by ALICE. Moreover, the off-diagonal cumulants are confronted with the lattice QCD predictions.

Content type Experiment
Collaboration ALICE
Centralised submission by Collaboration Presenter name already specified

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