Cumulants and correlation functions versus the QCD phase diagram
Abstract
Here, we discuss the relation of particle number cumulants and correlation functions. It is argued that measuring couplings of the genuine multiparticle correlation functions could provide cleaner information on possible nontrivial dynamics in heavy-ion collisions. We also extract integrated multiproton correlation functions from the presently available experimental data on proton cumulants. We find that the STAR data contain significant four-proton 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. Finally, using the Ising model, we demonstrate how the signs of the multiproton correlation functions may be used to exclude certain regions of the phase diagram close to the critical point.
- Authors:
-
- AGH - Univ. of Science and Technology, Krakow (Poland)
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division
- Publication Date:
- Research Org.:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1379847
- Alternate Identifier(s):
- OSTI ID: 1356870
- Grant/Contract Number:
- AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review C
- Additional Journal Information:
- Journal Volume: 95; Journal Issue: 5; Journal ID: ISSN 2469-9985
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 73 NUCLEAR PHYSICS AND RADIATION PHYSICS
Citation Formats
Bzdak, Adam, Koch, Volker, and Strodthoff, Nils. Cumulants and correlation functions versus the QCD phase diagram. United States: N. p., 2017.
Web. doi:10.1103/PhysRevC.95.054906.
Bzdak, Adam, Koch, Volker, & Strodthoff, Nils. Cumulants and correlation functions versus the QCD phase diagram. United States. https://doi.org/10.1103/PhysRevC.95.054906
Bzdak, Adam, Koch, Volker, and Strodthoff, Nils. Fri .
"Cumulants and correlation functions versus the QCD phase diagram". United States. https://doi.org/10.1103/PhysRevC.95.054906. https://www.osti.gov/servlets/purl/1379847.
@article{osti_1379847,
title = {Cumulants and correlation functions versus the QCD phase diagram},
author = {Bzdak, Adam and Koch, Volker and Strodthoff, Nils},
abstractNote = {Here, we discuss the relation of particle number cumulants and correlation functions. It is argued that measuring couplings of the genuine multiparticle correlation functions could provide cleaner information on possible nontrivial dynamics in heavy-ion collisions. We also extract integrated multiproton correlation functions from the presently available experimental data on proton cumulants. We find that the STAR data contain significant four-proton 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. Finally, using the Ising model, we demonstrate how the signs of the multiproton correlation functions may be used to exclude certain regions of the phase diagram close to the critical point.},
doi = {10.1103/PhysRevC.95.054906},
journal = {Physical Review C},
number = 5,
volume = 95,
place = {United States},
year = {Fri May 12 00:00:00 EDT 2017},
month = {Fri May 12 00:00:00 EDT 2017}
}
Web of Science
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