skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Measurement of higher cumulants of net-charge multiplicity distributions in Au + Au collisions at s N N = 7.7 200 GeV

Journal Article · · Physical Review C
; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; more »; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; « less

Here, we report the measurement of cumulants (Cn,n = 1, ..., 4) of the net-charge distributions measured within pseudorapidity (vertical bar eta vertical bar < 0.35) in Au + Au collisions at √sNN = 7.7-200 GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider. The ratios of cumulants (e.g., C1/C2, C3/C1) of the net-charge distributions, which can be related to volume independent susceptibility ratios, are studied as a function of centrality and energy. These quantities are important to understand the quantum-chromodynamics phase diagram and possible existence of a critical end point. The measured values are very well described by expectation from negative binomial distributions. We do not observe any nonmonotonic behavior in the ratios of the cumulants as a function of collision energy. Moreover, the measured values of C1/C2 and C3/C1 can be directly compared to lattice quantum-chromodynamics calculations and thus allow extraction of both the chemical freeze-out temperature and the baryon chemical potential at each center-of-mass energy. Finally, the extracted baryon chemical potentials are in excellent agreement with a thermal-statistical analysis model.

Research Organization:
Brookhaven National Laboratory (BNL), Upton, NY (United States). Relativistic Heavy Ion Collider (RHIC); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Organization:
PHENIX Collaboration
Grant/Contract Number:
SC00112704; AC05-00OR22725
OSTI ID:
1254808
Alternate ID(s):
OSTI ID: 1235635; OSTI ID: 1324161
Report Number(s):
BNL-112046-2016-JA; PRVCAN; KB-02-01-021
Journal Information:
Physical Review C, Vol. 93, Issue 1; ISSN 2469-9985
Publisher:
APSCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 72 works
Citation information provided by
Web of Science

References (57)

Integer-valued Lévy processes and low latency financial econometrics journal April 2012
QCD Phase Diagram and the Critical Point journal January 2004
Random Matrix Model of QCD at Finite Density and the Nature of the Quenched Limit journal June 1996
Canonical partition function and finite density phase transition in lattice QCD journal October 2008
QCD at finite baryon density: nucleon droplets and color superconductivity journal March 1998
A reaction plane detector for PHENIX at RHIC
  • Richardson, E.; Akiba, Y.; Anderson, N.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 636, Issue 1 https://doi.org/10.1016/j.nima.2011.01.034
journal April 2011
Freeze-Out Parameters: Lattice Meets Experiment journal August 2013
Event-by-event fluctuations in heavy ion collisions and the QCD critical point journal November 1999
Critical point of QCD at finite T and  , lattice results for physical quark masses journal April 2004
Baryon number conservation and the cumulants of the net proton distribution journal January 2013
Beam Energy Dependence of Moments of the Net-Charge Multiplicity Distributions in Au + Au Collisions at RHIC journal August 2014
PHENIX detector overview
  • Adcox, K.; Adler, S. S.; Aizama, M.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 499, Issue 2-3 https://doi.org/10.1016/S0168-9002(02)01950-2
journal March 2003
Freeze-out conditions from net-proton and net-charge fluctuations at RHIC journal November 2014
Energy Dependence of Moments of Net-Proton Multiplicity Distributions at RHIC journal January 2014
The order of the quantum chromodynamics transition predicted by the standard model of particle physics journal October 2006
Fluctuation Probes of Quark Deconfinement journal September 2000
hijing: A Monte Carlo model for multiple jet production in pp , pA , and AA collisions journal December 1991
Freeze-Out Conditions in Heavy Ion Collisions from QCD Thermodynamics journal November 2012
Higher Moments of Net Proton Multiplicity Distributions at RHIC journal July 2010
Freeze-Out Parameters from Electric Charge and Baryon Number Fluctuations: Is There Consistency? journal July 2014
Baryon number and electric charge fluctuations in Pb+Pb collisions at relativistic energies journal December 2006
Charged hadron multiplicity fluctuations in Au + Au and Cu + Cu collisions from s NN = 22 . 5 to 200 GeV journal October 2008
Baryon-Strangeness Correlations: A Diagnostic of Strongly Interacting Matter journal October 2005
Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations journal January 2011
Systematic studies of the centrality and s NN dependence of the d E T / d η and d N ch / d η in heavy ion collisions at midrapidity journal March 2005
Remarks on the chiral phase transition in chromodynamics journal January 1984
Third Moments of Conserved Charges as Probes of QCD Phase Structure journal December 2009
Glauber Modeling in High-Energy Nuclear Collisions journal November 2007
Baryon number, strangeness, and electric charge fluctuations in QCD at high temperature journal April 2009
Comparison of chemical freeze-out criteria in heavy-ion collisions journal March 2006
First study of the negative binomial distribution applied to higher moments of net-charge and net-proton multiplicity distributions journal July 2013
Non-Gaussian Fluctuations near the QCD Critical Point journal January 2009
Hadronic fluctuations at the QCD phase transition journal February 2006
Lattice QCD predictions for shapes of event distributions along the freezeout curve in heavy-ion collisions journal February 2011
Signatures of the Tricritical Point in QCD journal November 1998
An Introduction to the Bootstrap book May 1994
Comparison of chemical freeze-out criteria in heavy-ion collisions conference May 2007
Freeze-out parameters: lattice meets experiment
  • Borsanyi, Szabolcs; Fodor, Zoltan; Katz, Sandor D.
  • Proceedings of From quarks and gluons to hadronic matter: A bridge too far? — PoS(QCD-TNT-III) https://doi.org/10.22323/1.193.0033
conference February 2014
Baryon-strangeness correlations: a diagnostic of strongly interacting matter journal August 2006
Fluctuation probes of quark deconfinement journal February 2002
Canonical partition function and finite density phase transition in lattice QCD text January 2008
Non-Gaussian fluctuations near the QCD critical point text January 2008
Lattice QCD predictions for shapes of event distributions along the freezeout curve in heavy-ion collisions text January 2010
Higher Moments of Net-proton Multiplicity Distributions at RHIC text January 2010
Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations text January 2010
A Reaction Plane Detector for PHENIX at RHIC text January 2010
First Study of the Negative Binomial Distribution Applied to Higher Moments of Net-charge and Net-proton Multiplicity Distributions text January 2012
Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC text January 2013
Freeze-out conditions from net-proton and net-charge fluctuations at RHIC text January 2014
Critical point of QCD at finite T and μ, lattice results for physical quark masses text January 2004
The order of the quantum chromodynamics transition predicted by the standard model of particle physics text January 2006
QCD phase diagram and the critical point text January 2004
Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions text January 2005
Signatures of the Tricritical Point in QCD text January 1998
Event-by-Event Fluctuations in Heavy Ion Collisions and the QCD Critical Point text January 1999
Glauber Modeling in High Energy Nuclear Collisions text January 2007
Fluctuation probes of quark deconfinement text January 2001

Cited By (26)

Search for the QCD critical point with fluctuations of conserved quantities in relativistic heavy-ion collisions at RHIC: an overview journal July 2017
Decoding the phase structure of QCD via particle production at high energy journal September 2018
Diagonal and off-diagonal susceptibilities of conserved quantities in relativistic heavy-ion collisions journal October 2016
The phase structure of QCD journal August 2017
Exploring the hadron resonance gas phase on the QCD phase diagram journal May 2019
Lattice QCD and heavy ion collisions: a review of recent progress journal July 2018
Behavior of universal critical parameters in the QCD phase diagram journal January 2017
Collision-energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton, and net-kaon multiplicity distributions in Au + Au collisions journal July 2019
Estimation of stopped protons at energies relevant for a beam energy scan at the BNL Relativistic Heavy Ion Collider journal April 2017
Centrality dependence of chemical freeze-out parameters from net-proton and net-charge fluctuations using a hadron resonance gas model journal July 2017
Freezeout systematics due to the hadron spectrum journal November 2017
Conformal perturbation theory confronts lattice results in the vicinity of a critical point journal August 2019
Skewness and kurtosis of net baryon-number distributions at small values of the baryon chemical potential journal October 2017
Challenges in QCD matter physics --The scientific programme of the Compressed Baryonic Matter experiment at FAIR journal March 2017
Role of new resonance states on fluctuations and correlations of conserved charges in hadron resonance gas model journal October 2018
Elliptic Flow of Identified Particles in Pb–Pb Collisions at s NN = 5.02 TeV journal January 2020
Conformal perturbation theory confronts lattice results in the vicinity of a critical point text January 2019
Skewness and kurtosis of net baryon-number distributions at small values of the baryon chemical potential text January 2017
Cumulants of multiplicity distributions in most-central heavy-ion collisions text January 2016
Centrality dependence of chemical freeze-out parameters from net-proton and net-charge fluctuations using hadron resonance gas model text January 2016
Higher moments of multiplicity fluctuations in a hadron-resonance gas with exact conservation laws text January 2016
Dynamical evolution of critical fluctuations and its observation in heavy ion collisions text January 2017
Freezeout systematics due to the hadron spectrum text January 2017
Dynamical initial state model for relativistic heavy-ion collisions text January 2017
Decoding the phase structure of QCD via particle production at high energy text January 2017
Collision energy dependence of second-order off-diagonal and diagonal cumulants of net-charge, net-proton and net-kaon multiplicity distributions in Au+Au collisions text January 2019