Effects of Nuclear Potential on the Cumulants of Net-Proton and Net-Baryon Multiplicity Distributions in Au+Au Collisions at $\sqrt{s_{\text{NN}}}=5\text{GeV}$

Abstract

We analyze the rapidity and transverse momentum dependence for the cumulants of the net-proton and net-baryon distributions in Au+Au collisions at $\sqrt{s_{\text{NN}}}=5\text{GeV}$ with a microscopic hadronic transport (JAM) model. To study the effects of mean field potential and softening of equation of state (EoS) on the fluctuations of net-proton (baryon) in heavy-ion collisions, the calculations are performed with two different modes. The softening of EoS is realized in the model by implementing the attractive orbit in the two-body scattering to introduce a reduction pressure of the system. By comparing the results from the two modes with the results from default cascade, we find the mean field potential and softening of EoS have strong impacts on the rapidity distributions ($\text{d}N/\text{d}y$) and the shape of the net-proton (baryon) multiplicity distributions. The net-proton (baryon) cumulants and their ratios calculated from all of the three modes are with similar trends and show significant suppression with respect to unity, which can be explained by the presence of baryon number conservations. It indicates that the effects of mean field potential and softening of EoS might be not the ingredients that are responsible to the observed strong enhancement in the most central Au+Au collisions at 7.7 GeV measured by the STAR experiment at RHIC.

arXiv comment6 pages, 5 figures

References in corpus (46)

• 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)
• Event-by-Event Fluctuations in Heavy Ion Collisions and the QCD Critical Point
• Non-Gaussian fluctuations near the QCD critical point
• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• On the sign of kurtosis near the QCD critical point
• Study of relativistic nuclear collisions at AGS energies from p+Be to Au+Au with hadronic cascade model
• Higher Moments of Net-proton Multiplicity Distributions at RHIC
• 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
• Scale for the Phase Diagram of Quantum Chromodynamics
• Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics
• Hadronic fluctuations at the QCD phase transition
• Fluctuations as probe of the QCD phase transition and freeze-out in heavy ion collisions at LHC and RHIC
• Canonical partition function and finite density phase transition in lattice QCD
• Third moments of conserved charges as probes of QCD phase structure
• QCD phase diagram and the critical point
• Freeze-out conditions from net-proton and net-charge fluctuations at RHIC
• Freeze-out parameters: lattice meets experiment
• Critical Points in the Linear Sigma Model with Quarks
• 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
• Real time evolution of non-Gaussian cumulants in the QCD critical regime
• Lattice QCD predictions for shapes of event distributions along the freezeout curve in heavy-ion collisions
• QCD critical region and higher moments for three flavor models
• Revealing baryon number fluctuations from proton number fluctuations in relativistic heavy ion collisions
• The Phase Transition to the Quark-Gluon Plasma and Its Effect on Hydrodynamic Flow
• Volume Fluctuation and Autocorrelation Effects in the Moment Analysis of Net-proton Multiplicity Distributions in Heavy-Ion Collisions
• Mean-Field Effects on Collective Flows in High-Energy Heavy-Ion Collisions at 2-158A GeV energies
• Unified Description of Efficiency Correction and Error Estimation for Moments of Conserved Quantities in Heavy-Ion Collisions
• Error Estimation for Moments Analysis in Heavy-Ion Collision Experiments
• Scaled variance, skewness, and kurtosis near the critical point of nuclear matter
• Impact of resonance regeneration and decay on the net-proton fluctuations in a hadron resonance gas
• Net-proton probability distribution in heavy ion collisions
• Net-baryon-, net-proton-, and net-charge kurtosis in heavy-ion collisions within a relativistic transport approach
• Hadron resonance gas and mean-field nuclear matter for baryon number fluctuations
• Robust characteristics of nongaussian fluctuations from the NJL model
• Energy Dependence of Moments of Net-Proton and Net-Charge Multiplicity Distributions at STAR
• Cumulants of Net-Proton, Net-Kaon and Net-Charge Multiplicity Distributions in Au+Au Collisions at RHIC BES Energies from UrQMD Model
• Criticality of the net-baryon number probability distribution at finite density
• Relativistic Effects in the Transverse Flow in the Molecular Dynamics Framework
• Baryon susceptibilities, nongaussian moments and the QCD critical point
• Baseline for the cumulants of net-proton distributions at STAR
• Net-proton number kurtosis and skewness in nuclear collisions: Influence of deuteron formation
• Probing the QCD phase diagram with fluctuations
• Relativistic Effects in Simulations of the Fragmentation Process with the Microscopic Framework

Cited by in corpus (22)

• Mapping the Phases of Quantum Chromodynamics with Beam Energy Scan
• Search for the QCD Critical Point with Fluctuations of Conserved Quantities in Relativistic Heavy-Ion Collisions at RHIC : An Overview
• 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
• Hyper-order baryon number fluctuations at finite temperature and density
• QCD at finite temperature and density within the fRG approach: An overview
• A Study of the Properties of the QCD Phase Diagram in High-Energy Nuclear Collisions
• Beam Energy dependence of Light Nuclei Production in Au+Au Collisions
• Chemical freeze-out conditions and fluctuations of conserved charges in heavy-ion collisions within quantum van der Waals model
• Sensitivity of the excitation functions of collective flow to relativistic scalar and vector meson interactions in the relativistic quantum molecular dynamics model RQMD.RMF
• Critical point of nuclear matter and beam energy dependence of net proton number fluctuations
• Proton Cumulants and Correlation Functions in Au + Au Collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7-200 GeV from UrQMD Model
• Identifying the presence of the critical end point in QCD phase diagram by higher order susceptibilities
• Non-critical fluctuations of (net) charges and (net) protons from iEBE-VISHNU hybrid model
• Proton correlations and apparent intermittency in the UrQMD model with hadronic potentials
• Collision energy dependence of the critical end point from baryon number fluctuations in the Linear Sigma Model with quarks
• The cumulants of the baryon number from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon reveal the nuclear mean-field potentials
• Nuclear interactions and net-proton number fluctuations in heavy ion collisions at the SIS18 accelerator
• Event-by-Event Efficiency Fluctuations and Efficiency Correction for Cumulants of Superposed Multiplicity Distributions in Relativistic Heavy-ion Collision Experiments
• Effects of resonance weak decays and hadronic re-scattering on the proton number fluctuations in Au + Au collisions at $\sqrt{s_{\mathrm{NN}}}=5$ GeV from JAM model
• Effects of centrality fluctuation and deuteron formation on proton number cumulant in Au+Au collisions at $\sqrt{s_{\mathrm{NN}}}$ = 3 GeV from JAM model
• 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
• Kinetics of the chiral phase transition in a quark-meson $\sigma$-model