Chemical freeze-out conditions and fluctuations of conserved charges in heavy-ion collisions within quantum van der Waals model

Abstract

The chemical freeze-out parameters in central nucleus-nucleus collisions are extracted consistently from hadron yield data within the quantum van der Waals (QvdW) hadron resonance gas model. The beam energy dependences for skewness and kurtosis of net baryon, net electric, and net strangeness charges are predicted. The QvdW interactions in asymmetric matter, $Q/B\ne 0.5$, between (anti)baryons yield a non-congruent liquid-gas phase transition, together with a nuclear critical point (CP) with critical temperature of $T_c=19.5$ MeV. The nuclear CP yields the collision energy dependence of the skewness and the kurtosis to both deviate significantly from the ideal hadron resonance gas baseline predictions even far away, in $(T,{\mu }_B)$-plane, from the CP. These predictions can readily be tested by STAR and NA61/SHINE Collaborations at the RHIC BNL and the SPS CERN, respectively, and by HADES at GSI. The results presented here offer a broad opportunity for the search for signals of phase transition in dense hadronic matter at the future NICA and FAIR high intensity facilities.

20 pages, 21 figures

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Cited by in corpus (22)

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• A Study of the Properties of the QCD Phase Diagram in High-Energy Nuclear Collisions
• Proton number cumulants and correlation functions in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV from hydrodynamics
• Influence of hadronic resonances on the chemical freeze-out in heavy-ion collisions
• Feeddown contributions from unstable nuclei in relativistic heavy-ion collisions
• Critical point fluctuations: Finite size and global charge conservation effects
• Binomial acceptance corrections for particle number distributions in high-energy reactions
• Light-nuclei production and search for the QCD critical point
• Hadron resonance gas with van der Waals interactions
• Traces of the nuclear liquid-gas phase transition in the analytic properties of hot QCD
• Ambiguities in the hadro-chemical freeze-out of Au+Au collisions at SIS18 energies and how to resolve them
• Chemical freeze-out curve in heavy-ion collisions and the QCD critical point
• Brief history of the search for critical structures in heavy-ion collisions
• Higher order conserved charge fluctuations inside the mixed phase
• Diffusion and fluctuations of open charmed hadrons in an interacting hadronic medium
• Molecular dynamics analysis of particle number fluctuations in the mixed phase of a first-order phase transition
• Probing nuclear liquid-gas phase transition with isospin correlations
• Collision Energy Dependence of Particle Ratios and Freeze-out Parameters in Ultra Relativistic Nucleus Nucleus Collisions
• Cluster production and the chemical freeze-out in expanding hot dense matter
• Can charm fluctuation be a better probe to study QCD critical point?
• Fluctuations in heavy ion collisions and global conservation effects
• Toward a Unified Understanding of the Dense Matter Equation of State