Baryon-Strangeness Correlations in Au+Au Collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7-200 GeV from the UrQMD model

Abstract

Fluctuations and correlations of conserved charges are sensitive observables for studying the QCD phase transition and critical point in high-energy heavy-ion collisions. We have studied the centrality and energy dependence of mixed-cumulants (up to fourth order) between net-baryon and net-strangeness in Au+Au collisions at $\sqrt{s_{NN}}$= 7.7, 11.5, 19.6, 27, 39, 62.4, 200 GeV from UrQMD model. To compare with other theoretical calculations, we normalize these mixed-cumulants by various order cumulants of net-strangeness distributions. We found that the results obtained from UrQMD calculations are comparable with the results from Lattice QCD at low temperature and hadron resonance gas model. The ratios of mixed-cumulants ($R_{11}^{BS},R_{13}^{BS},R_{22}^{BS}$,~$R_{31}^{BS}$) from UrQMD calculations show weak centrality dependence. However, the mixed-cumulant ratios $R_{11}^{BS}$ and $R_{31}^{BS}$ show strong increase at low energy, while the $R_{13}^{BS}$ snd $R_{22}^{BS}$ are similar at different energies. Furthermore, we have also studied the correlations between different hadron species and their contributions to the net-baryon and net-strangeness correlations. These models studies can provide baselines for searching for the signals of QCD phase transition and critical point in heavy-ion collisions.

arXiv comment11 pages, 5 figures

References in corpus (45)

• Microscopic Models for Ultrarelativistic Heavy Ion Collisions
• Relativistic Hadron-Hadron Collisions in the Ultra-Relativistic Quantum Molecular Dynamics Model (UrQMD)
• Signatures of the Tricritical Point in QCD
• Event-by-Event Fluctuations in Heavy Ion Collisions and the QCD Critical Point
• Non-Gaussian fluctuations near the QCD critical point
• Thermodynamics of Two Flavor QCD to Sixth Order in Quark Chemical Potential
• Energy Dependence of Moments of Net-proton Multiplicity Distributions at RHIC
• On the sign of kurtosis near the QCD critical point
• Fluctuation Probes of Quark Deconfinement
• Charged Particle Ratio Fluctuation as a Signal for QGP
• Fluctuations of conserved charges at finite temperature from lattice QCD
• 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
• Properties of hot and dense matter from relativistic heavy ion collisions
• Beam energy dependence of moments of the net-charge multiplicity distributions in Au+Au collisions at RHIC
• Scale for the Phase Diagram of Quantum Chromodynamics
• Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics
• Baryon Number, Strangeness and Electric Charge Fluctuations in QCD at High Temperature
• Baryon-strangeness correlations: a diagnostic of strongly interacting matter
• QCD at finite chemical potential with six time slices
• Third moments of conserved charges as probes of QCD phase structure
• The critical end point of QCD
• Three-loop HTLpt thermodynamics at finite temperature and chemical potential
• Freeze-out conditions from net-proton and net-charge fluctuations at RHIC
• Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freeze-out in Heavy Ion Collisions
• Is there a flavor hierarchy in the deconfinement transition of QCD?
• Fluctuations of particle ratios and the abundance of hadronic resonances
• Quark number susceptibilities from HTL-resummed thermodynamics
• Strangeness at high temperatures: from hadrons to quarks
• Exploring the QCD Phase Structure with Beam Energy Scan in Heavy-ion Collisions
• Fluctuations of conserved charges in relativistic heavy ion collisions: An introduction
• Diagonal and off-diagonal quark number susceptibilities at high temperatures
• Event-by-event fluctuations of the charged particle ratio from non-equilibrium transport theory
• Fluctuations, strangeness and quasi-quarks in heavy-ion collisions from lattice QCD
• 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
• Quark number susceptibilities at high temperatures
• The continuum limit of quark number susceptibilities
• Valence quarks in the QCD plasma: quark number susceptibilities and screening
• Quark number susceptibilities from resummed perturbation theory
• Cumulants of Net-Proton, Net-Kaon and Net-Charge Multiplicity Distributions in Au+Au Collisions at RHIC BES Energies from UrQMD Model
• Baryonic Strangeness and Related Susceptibilities in QCD
• Diagonal and off-diagonal susceptibilities of conserved quantities in relativistic heavy-ion collisions
• Event-by-Event Analysis of Baryon-Strangeness Correlations: Pinning Down the Critical Temperature and Volume of QGP Formation
• Correlations of conserved number mixed susceptibilities in a hadron resonance gas model

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• 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
• Proton Cumulants and Correlation Functions in Au + Au Collisions at $\sqrt{s_{\mathrm{NN}}}$=7.7-200 GeV from UrQMD Model
• Freezeout systematics due to the hadron spectrum
• Non-critical fluctuations of (net) charges and (net) protons from iEBE-VISHNU hybrid model
• Purity correction for cumulants of hyperon number distribution
• System size dependence of baryon-strangeness correlations in relativistic heavy ion collisions from a multiphase transport model
• Efficiency corrections for mutually inclusive variables and particle identification effect for mixed-cumulants in heavy-ion collisions
• Constraining input parameters of AMPT model with $\varphi$ meson production