Feb 5 – 11, 2017
Hyatt Regency Chicago
America/Chicago timezone

Cumulants and Correlation Functions vs the QCD phase diagram

Feb 8, 2017, 3:00 PM
Regency B

Regency B


Adam Bzdak (AGH University of Science and Technology)


We will discuss the relation between particle number cumulants and multi-particle correlation functions. It is argued that measuring couplings of the genuine correlation functions could provide cleaner information on possible non-trivial dynamics in heavy-ion collisions. We extract integrated multi-particle correlation functions from the presently available experimental data on proton cumulants. We find that the STAR data contain significant four-particle correlations, at least at the lower energies, with indication of changing dynamics in central collisions. We also find that these correlations are rather long-ranged in rapidity. Based on the signs of genuine correlation functions we provide exclusion plots for the QCD phase diagram.

Collaboration Not applicable
Preferred Track QCD at High Temperature

Primary author

Adam Bzdak (AGH University of Science and Technology)

Presentation materials