Cumulants and correlation functions versus the QCD phase diagram

Bzdak, Adam; Koch, Volker; Strodthoff, Nils

doi:10.1103/PhysRevC.95.054906

Title: Cumulants and correlation functions versus the QCD phase diagram

Journal Article · Fri May 12 00:00:00 EDT 2017 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.95.054906· OSTI ID:1379847

Bzdak, Adam ^[1]; Koch, Volker ^[2]; Strodthoff, Nils ^[2]

AGH - Univ. of Science and Technology, Krakow (Poland)
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Nuclear Science Division

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.

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Research Organization:: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1379847

Alternate ID(s):: OSTI ID: 1356870

Journal Information:: Physical Review C, Vol. 95, Issue 5; ISSN 2469-9985

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 40 works

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Final state hadronic rescattering with UrQMD Steinheimer, J.; Vovchenko, V.; Aichelin, J. GSI Helmholtzzentrum fuer Schwerionenforschung, GSI, Darmstadt https://doi.org/10.15120/gsi-2019-00366	text	January 2018
Final state hadronic rescattering with UrQMD Steinheimer, J.; Vovchenko, V.; Aichelin, J. EPJ Web of Conferences, Vol. 171 https://doi.org/10.1051/epjconf/201817105003	journal	January 2018
Dynamical evolution of critical fluctuations and its observation in heavy ion collisions Sakaida, Miki; Asakawa, Masayuki; Fujii, Hirotsugu arXiv https://doi.org/10.48550/arxiv.1703.08008	text	January 2017
Rapidity dependence of proton cumulants and correlation functions Bzdak, Adam; Koch, Volker arXiv https://doi.org/10.48550/arxiv.1707.02640	text	January 2017
Centrality fluctuations in heavy-ion collisions Zhou, Mingliang; Jia, Jiangyong arXiv https://doi.org/10.48550/arxiv.1803.01812	text	January 2018

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