Non-critical fluctuations of (net) charges and (net) protons from iEBE-VISHNU hybrid model

Abstract

In this paper, we investigate the non-critical fluctuations of (net) charges and (net) protons in Au+Au collisions at $\sqrt{s_{NN}}$ = 7.7, 39 and 200 GeV, using iEBE-VISHNU hybrid model with Poisson fluctuations added in the particle event generator between hydrodynamics and UrQMD. Various effects, such as volume fluctuations hadronic evolution and scatterings, resonance decays, as well as realistic centrality cuts and acceptance cuts have been embedded in our model calculations. With properly tuned parameters, iEBE-VISHNU roughly describe the centrality dependent moments and cumulants of (net) charges and (net) protons measured in experiment. Further comparison simulations show that the volume fluctuation is the dominant factor to influence the multiplicity fluctuations, which makes the higher moments of (net) charges largely deviate from the Poison baselines. We also find that the effects from hadronic evolutions and resonance decays are pretty small or even negligible for the multiplicity fluctuations of both (net) charges and (net) protons.

References in corpus (76)

• Quark Gluon Plasma an Color Glass Condensate at RHIC? The perspective from the BRAHMS experiment
• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Glauber Modeling in High Energy Nuclear Collisions
• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Non-Gaussian fluctuations near the QCD critical point
• Causal viscous hydrodynamics in 2+1 dimensions for relativistic heavy-ion collisions
• Applying Bayesian parameter estimation to relativistic heavy-ion collisions: simultaneous characterization of the initial state and quark-gluon plasma medium
• Collective flow and two-pion correlations from a relativistic hydrodynamic model with early chemical freeze out
• Alternative ansatz to wounded nucleon and binary collision scaling in high-energy nuclear collisions
• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC : An Overview
• Hadronic dissipative effects on elliptic flow in ultrarelativistic heavy-ion collisions
• Suppression of elliptic flow in a minimally viscous quark-gluon plasma
• Charged Particle Ratio Fluctuation as a Signal for QGP
• Higher Moments of Net-proton Multiplicity Distributions at RHIC
• Fluctuations and Correlations of net baryon number, electric charge, and strangeness: A comparison of lattice QCD results with the hadron resonance gas model
• Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC
• Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations
• Perfect Fluidity of the Quark Gluon Plasma Core as Seen through its Dissipative Hadronic Corona
• Multiplicity scaling in ideal and viscous hydrodynamics
• Transverse flow and hadro-chemistry in Au+Au collisions at \sqrt{s_{NN}}=200 GeV
• QCD phase diagram and the critical point
• Freeze-out conditions from net-proton and net-charge fluctuations at RHIC
• Effects of fluctuations on the initial eccentricity from the Color Glass Condensate in heavy ion collisions
• Freeze-out parameters: lattice meets experiment
• Relativistic Theory of Hydrodynamic Fluctuations with Applications to Heavy Ion Collisions
• Viscous QCD matter in a hybrid hydrodynamic+Boltzmann approach
• Using Higher Moments of Fluctuations and their Ratios in the Search for the QCD Critical Point
• Baryon number conservation and the cumulants of the net proton distribution
• Relation between baryon number fluctuations and experimentally observed proton number fluctuations in relativistic heavy ion collisions
• Eccentricity fluctuations from the Color Glass Condensate at RHIC and LHC
• Acceptance corrections to net baryon and net charge cumulants
• Volume fluctuations and higher order cumulants of the net baryon number
• Revealing baryon number fluctuations from proton number fluctuations in relativistic heavy ion collisions
• Conserved number fluctuations in a hadron resonance gas model
• Particle Number Fluctuations in Canonical Ensemble
• Fluctuations of conserved charges in relativistic heavy ion collisions: An introduction
• Eccentricity fluctuation effects on elliptic flow in relativistic heavy ion collisions
• Collective flow in 2.76 A TeV and 5.02 A TeV Pb+Pb collisions
• Acceptance dependence of fluctuation measures near the QCD critical point
• Unified Description of Efficiency Correction and Error Estimation for Moments of Conserved Quantities in Heavy-Ion Collisions
• Spectra and elliptic flow for identified hadrons in 2.76 A TeV Pb+Pb collisions
• Error Estimation for Moments Analysis in Heavy-Ion Collision Experiments
• Impact of resonance regeneration and decay on the net-proton fluctuations in a hadron resonance gas
• Elliptic flow in U+U collisions at sqrt{s_{NN}} = 200 GeV and in Pb+Pb collisions at sqrt{s_{NN}} = 2.76 TeV: Prediction from a hybrid approach
• The Hot QCD White Paper: Exploring the Phases of QCD at RHIC and the LHC
• Multiplicity fluctuations in relativistic nuclear collisions: statistical model versus experimental data
• Chemical freeze-out temperature in hydrodynamical description of Au+Au collisions at sqrt(s_NN) = 200 GeV
• Thermodynamics and fluctuations of conserved charges in Hadron Resonance Gas model in finite volume
• Correlations of flow harmonics in 2.76A TeV Pb--Pb collisions
• Correlated fluctuations near the QCD critical point
• QGP viscosity at RHIC and the LHC - a 2012 status report
• Net-proton probability distribution in heavy ion collisions
• Probing the QCD Critical Point with Higher Moments of Net-proton Multiplicity Distributions
• High order flow harmonics of identified hadrons in 2.76 A TeV Pb+Pb collisions
• Stabilizing Hadron Resonance Gas Models against Future Discoveries
• Effects of kinematic cuts on net-electric charge fluctuations
• A hybrid model approach for strange and multi-strange hadrons in 2.76 A TeV Pb+Pb collisions
• Effects of global charge conservation on time evolution of cumulants of conserved charges in relativistic heavy ion collisions
• Cumulants of Net-Proton, Net-Kaon and Net-Charge Multiplicity Distributions in Au+Au Collisions at RHIC BES Energies from UrQMD Model
• Probability distributions in statistical ensembles with conserved charges
• Effects of Nuclear Potential on the Cumulants of Net-Proton and Net-Baryon Multiplicity Distributions in Au+Au Collisions at $\sqrt{s_{\text{NN}}}=5\text{GeV}$
• Proton Cumulants and Correlation Functions in Au + Au Collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7-200 GeV from UrQMD Model
• Resonance decay effect on conserved number fluctuations in a hadron resonance gas model
• Effects of volume corrections and resonance decays on cumulants of net-charge distributions in a Monte Carlo hadron resonance gas model
• Cumulants of event-by-event net-strangeness distributions in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7-200 GeV from UrQMD model
• Spinodal Instabilities of Baryon-Rich Quark-gluon Plasma in the PNJL Model
• Baseline for the cumulants of net-proton distributions at STAR
• Cumulants of multiplicity distributions in most-central heavy-ion collisions
• Multiplicity fluctuations of net protons on the hydrodynamic freeze-out surface
• Different Realizations of Cooper-Frye Sampling with Conservation Laws
• Baryon-Strangeness Correlations in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7-200 GeV from the UrQMD model
• Higher moments of multiplicity fluctuations in a hadron-resonance gas with exact conservation laws
• Influence of kinematic cuts on the net charge distribution

Cited by in corpus (14)

• Dynamical initial state model for relativistic heavy-ion collisions
• Cumulants and Correlation Functions of Net-proton, Proton and Antiproton Multiplicity Distributions in Au+Au Collisions at energies available at the BNL Relativistic Heavy Ion Collider
• Proton number cumulants and correlation functions in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV from hydrodynamics
• Centrality fluctuations in heavy-ion collisions
• Quartic cumulant of baryon number in the presence of QCD critical point
• Beam Energy dependence of Light Nuclei Production in Au+Au Collisions
• Universal scaling of the sigma field and net-protons from Langevin dynamics of model A
• Centrality fluctuations and decorrelations in heavy-ion collisions
• Correlations of conserved charges and QCD phase structure
• The cumulants of the baryon number from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon reveal the nuclear mean-field potentials
• Hydrodynamic results on multiplicity fluctuations in heavy-ion collisions
• Beam energy dependence of cumulants of the net-baryon, net-charge and deuteron multiplicity distributions in Au+Au collisions at $\sqrt{s_{NN}}=3.0-5.0$ GeV
• Statistical method in quark combination model
• Effects of Initial Density Fluctuations on Cumulants in Au + Au Collisions at $\sqrt{s_{NN}}$ = 7.7 GeV