Charged hadron multiplicity fluctuations in Au+Au and Cu+Cu collisions from sqrt(s_NN) = 22.5 to 200 GeV

Abstract

A comprehensive survey of event-by-event fluctuations of charged hadron multiplicity in relativistic heavy ions is presented. The survey covers Au+Au collisions at sqrt(s_NN) = 62.4 and 200 GeV, and Cu+Cu collisions sqrt(s_NN) = 22.5, 62.4, and 200 GeV. Fluctuations are measured as a function of collision centrality, transverse momentum range, and charge sign. After correcting for non-dynamical fluctuations due to fluctuations in the collision geometry within a centrality bin, the remaining dynamical fluctuations expressed as the variance normalized by the mean tend to decrease with increasing centrality. The dynamical fluctuations are consistent with or below the expectation from a superposition of participant nucleon-nucleon collisions based upon p+p data, indicating that this dataset does not exhibit evidence of critical behavior in terms of the compressibility of the system. An analysis of Negative Binomial Distribution fits to the multiplicity distributions demonstrates that the heavy ion data exhibit weak clustering properties.

464 authors from 60 institutions, 17 pages, 12 figures, 1 table. Submitted to Physical Review C. Plain text data tables for the points plotted in figures for this and previous PHENIX publications are (or will be) publicly available at http://www.phenix.bnl.gov/papers.html

References in corpus (10)

• Glauber Modeling in High Energy Nuclear Collisions
• Scaling properties of azimuthal anisotropy in Au+Au and Cu+Cu collisions at sqrt(s_NN) = 200 GeV
• Susceptibilities near the QCD (tri)critical point
• Quark Number Fluctuations in a Chiral Model at Finite Baryon Chemical Potential
• Centrality and system size dependence of multiplicity fluctuations in nuclear collisions at 158 AGeV
• Measurement of density correlations in pseudorapidity via charged particle multiplicity fluctuations in Au+Au collisions at sqrt(s_NN)=200 GeV
• Baryon Number and Electric Charge Fluctuations in Pb+Pb Collisions at SPS energies
• Searching for the Critical Point of QCD: Theoretical Benchmark Calculations
• Multiplicity Fluctuations in Au+Au Collisions at RHIC
• Possible links between the liquid-gas and deconfinement-hadronization phase transitions

Cited by in corpus (57)

• Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics
• Translation of collision geometry fluctuations into momentum anisotropies in relativistic heavy-ion collisions
• Acceptance corrections to net baryon and net charge cumulants
• Glittering Glasmas
• Proton number fluctuations in $\sqrt{s_{NN}}$ = 2.4 GeV Au+Au collisions studied with HADES
• Saturation models of HERA DIS data and inclusive hadron distributions in p+p collisions at the LHC
• Measurement of higher cumulants of net-charge multiplicity distributions in Au$+$Au collisions at $\sqrt{s_{{}_{NN}}}=7.7-200$ GeV
• Multiplicity fluctuations due to the temperature fluctuations in high-energy nuclear collisions
• Longitudinal fluctuations of the fireball density in heavy-ion collisions
• Small x physics and RHIC data
• Hydrodynamic simulations of relativistic heavy-ion collisions with different lattice QCD calculations of the equation of state
• String Percolation and the Glasma
• Long range rapidity correlations as seen in the STAR experiment
• Centrality fluctuations in heavy-ion collisions
• Fluctuation Probes of Early-Time Correlations in Nuclear Collisions
• Statistical Power Law due to Reservoir Fluctuations and the Universal Thermostat Independence Principle
• The RHIC Beam Energy Scan Program: Results from the PHENIX Experiment
• Two-body nucleon-nucleon correlations in Glauber models of relativistic heavy-ion collisions
• Wounded nucleon model with realistic nucleon-nucleon collision profile and observables in relativistic heavy-ion collisions
• Unidirectional Random Growth with Resetting
• First Study of the Negative Binomial Distribution Applied to Higher Moments of Net-charge and Net-proton Multiplicity Distributions
• Fluctuations of the $K/\pi$ Ratio in Nucleus-Nucleus Collisions: Statistical and Transport Models
• Forward-backward multiplicity fluctuations in heavy nuclei collisions in the wounded nucleon model
• $p_T$-Dependent Particle Number Fluctuations From Principal Component Analyses in Hydrodynamic Simulations of Heavy-Ion Collisions
• Strongly Intensive Measures for Transverse Momentum and Particle Number Fluctuations
• Cumulants of multiplicity distributions in most-central heavy-ion collisions
• A critical review of RHIC experimental results
• Fluctuations in Charged Particle Multiplicities in Relativistic Heavy-Ion Collisions
• Isothermal compressibility of hadronic matter formed in relativistic nuclear collisions
• Fluctuations of the number of participants and binary collisions in AA interactions at fixed centrality in the Glauber approach
• Dissipative Properties and Isothermal Compressibility of Hot and Dense Hadron Gas using Non-extensive Statistics
• Non-extensive statistical distributions of charmed meson production in Pb-Pb and pp($\overline{\text{p}}$) collisions
• Higher moments of net-proton multiplicity distributions in a heavy-ion event pile-up scenario
• Strongly Intensive Measures for Particle Number Fluctuations: Effects of Hadronic Resonances
• Multiplicity distributions and long range rapidity correlations
• Energy and Transverse Momentum Fluctuations in the Equilibrium Quantum Systems
• Strongly Intensive Measures for Multiplicity Fluctuations
• Charged-particle multiplicity fluctuations in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Gluon correlations in the glasma
• Long range rapidity correlations and the ridge in A+A collisions
• Initial conditions of bulk matter in ultrarelativistic nuclear collisions
• Effect of correlations on cumulants in heavy-ion collisions
• Multiplicity Fluctuations and Correlations in Limited Momentum Space Bins in Relativistic Gases
• Rapidity correlations of protons from a fragmented fireball
• Experimental results on charge fluctuations in heavy-ion collisions
• Superposition models and the multiplicity fluctuations in heavy ion collisions
• Understanding the negative binomial multiplicity fluctuations in relativistic heavy ion collisions
• Multiplicity distributions in gravitational and strong interactions
• Pseudorapidity Window Size Dependence of Multiplicity Fluctuations in High-Energy Collisions with System Size and Beam Energies
• Multiplicity fluctuations in heavy-ion collisions using canonical and grand-canonical ensemble
• Jet Mass Dependence of Fragmentation in Positron-Proton Collisions
• Beam Energy Dependence of Clan Multiplicity at RHIC
• Fluctuation and flow probes of early-time correlations in relativistic heavy ion collisions
• A generalized definition of the isothermal compressibility in (2+1)-flavor QCD
• Imprints of clustering in multiplicity fluctuations
• Multiplicities in Au-Au and Cu-Cu collisions at \sqrt{s_{NN}} = 62.4 and 200 GeV
• Saturation in nuclei