Chemical freeze-out systematics of thermal model analysis using hadron yield ratios

Abstract

We provide a framework to estimate the systematic uncertainties in chemical freeze-out parameters extracted from ${\chi }^2$ analysis of thermal model, using hadron multiplicity ratios in relativistic heavy-ion collision experiments. Using a well known technique of graph theory, we construct all possible sets of independent ratios from available hadron yields and perform ${\chi }^2$ minimization on each set. We show that even for ten hadron yields, one obtains a large number ($10^8$) of independent sets which results in a distribution of extracted freeze-out parameters. We analyze these distributions and compare our results for chemical freeze-out parameters and associated systematic uncertainties with previous results available in the literature.

arXiv comment11 pages, 6 figures

References in corpus (70)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• Hadron production in central nucleus-nucleus collisions at chemical freeze-out
• Decoding the phase structure of QCD via particle production at high energy
• Centrality dependence of $\pi$, K, p production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Comparison of Chemical Freeze-Out Criteria in Heavy-Ion Collisions
• Bulk Properties of the Medium Produced in Relativistic Heavy-Ion Collisions from the Beam Energy Scan Program
• Hadron production in Au-Au collisions at RHIC
• Thermal Equilibration and Expansion in Nucleus-Nucleus Collision at the AGS
• Chemical Equilibration in Pb+Pb Collisions at the SPS
• Thermal hadron production in relativistic nuclear collisions: the hadron mass spectrum, the horn, and the QCD phase transition
• Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
• Chemical and Thermal Freeze-Out Parameters from 1 to 200 A.GeV
• Unified Description of Freeze-Out Parameters in Relativistic Heavy Ion Collisions
• K${}_{\mathrm{S}}^0$ and $\mathrm{\Lambda }$ production in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• THERMUS -- A Thermal Model Package for ROOT
• Multi-strange baryon production at mid-rapidity in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}}$ = 2.76 TeV
• Thermodynamics at Non-Zero Baryon Number Density: A Comparison of Lattice and Hadron Resonance Gas Model Calculations
• Chemical equilibrium study in nucleus-nucleus collisions at relativistic energies
• Pion, kaon, and proton production in central Pb-Pb Collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Confronting LHC data with the statistical hadronization model
• Freeze-out conditions from net-proton and net-charge fluctuations at RHIC
• On the Manifestation of Chiral Symmetry in Nuclei and Dense Nuclear Matter
• SHARE: Statistical Hadronization with Resonances
• Phi meson production in Au+Au and p+p collisions at sqrt (s)=200 GeV
• Excluded volume hadron gas model for particle number ratios in A+A collisions
• Multi-Strange Baryon Production in Au-Au collisions at sqrt(s_NN) = 130 GeV
• Mid-rapidity $\Lambda$ and $\bar{\Lambda }$ Production in Au+Au Collisions at $\sqrt{s_{{}_{NN}}}=130$ GeV
• Therminator: Thermal heavy-Ion generator
• Particle Production in Heavy Ion Collisions
• Measurements of $\varphi$ meson production in relativistic heavy-ion collisions at RHIC
• Interacting hadron resonance gas meets lattice QCD
• The QCD phase diagram: A comparison of lattice and hadron resonance gas model calculations
• Conserved number fluctuations in a hadron resonance gas model
• Measurement of the lambda and lambda^bar particles in Au+Au Collisions at sqrt(s_NN)=130 GeV
• Strange and Multi-strange Particle Production in Au+Au Collisions at $\sqrt{s_{NN}}$ = 62.4 GeV
• Matching Excluded Volume Hadron Resonance Gas Models and Perturbative QCD to Lattice Calculations
• Non-thermal p/pi ratio at LHC as a consequence of hadronic final state interactions
• Hadron production and QGP Hadronization in Pb--Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• Chemical freeze-out in ultra-relativistic heavy ion collisions at sqrt(s)_NN = 130 and 200 GeV
• Transition from Baryonic to Mesonic Freeze-Out
• Particle ratios at RHIC: Effective hadron masses and chemical freeze-out
• Centrality dependence of hadronization and chemical freeze-out conditions in heavy ion collisions at \sqrt s_{NN} = 2.76 TeV
• Dissipative properties of hot and dense hadronic matter in excluded volume hadron resonance gas model
• Strange freezeout
• Description of Hot and Dense Hadron Gas Properties in a New Excluded-Volume model
• Baryon Number Fluctuations from a Crossover Equation of State Compared to Heavy-Ion Collision Measurements in the Beam Energy Range $\sqrt{s_{NN}}$ = 7.7 to 200 GeV
• Hadron Resonance Gas with Repulsive Interactions and Fluctuations of Conserved Charges
• STAR Results from the RHIC Beam Energy Scan-I
• Fluctuations and correlations of conserved charges in an excluded volume hadron resonance gas model
• Thermodynamics and fluctuations of conserved charges in Hadron Resonance Gas model in finite volume
• Hadron-Resonance Gas at Freeze-out: Reminder on Importance of Repulsive Interactions
• Systematics of Kinetic Freeze-out Properties in High Energy Collisions from STAR
• Constant Trace Anomaly as a Universal Condition for the Chemical Freeze-Out
• Exploring effects of magnetic field on the Hadron Resonance Gas
• Strange Messages: Chemical and Thermal Freeze-out in Nuclear Collisions
• Measurements of Ks, Lambda and Xi from Au+Au collisions at \sqrt{s_NN} = 7.7, 11.5 and 39 GeV in STAR
• Centrality dependence of freeze-out parameters from the beam energy scan at STAR
• Medium modification of hadron masses and the thermodynamics of hadron resonance gas model
• Interacting hadron resonance gas model in K-matrix formalism
• Freezeout systematics due to the hadron spectrum
• Fluctuations as a test of chemical non-equilibrium at the LHC
• Centrality dependence of chemical freeze-out parameters from net-proton and net-charge fluctuations using hadron resonance gas model
• Systematics of chemical freeze-out parameters in heavy-ion collision experiments
• Thermodynamics of strongly interacting matter in a hybrid model
• Phenomenological bound on the viscosity of the hadron resonance gas
• Study of freeze-out dynamics in STAR at RHIC Beam Energy Scan Program
• Centrality dependence of freeze-out parameters from Au+Au collisions at $\sqrt{s_{NN}}=$7.7, 11.5 and 39 GeV
• Curing the acausal behavior of the sound velocity in an excluded volume hadron resonance gas model
• Formation of light nuclei at chemical freezeout: Description within a statistical thermal model
• Strangeness at SIS energies