Status of Chemical Freeze-Out

H. Oeschler; J. Cleymans; K. Redlich; S. Wheaton

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Status of Chemical Freeze-Out

J. Cleymans, H. Oeschler, K. Redlich, S. Wheaton

High Energy Physics - Phenomenology · Submitted 14 Jul 2006

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim The status of the energy dependence of the chemical freeze-out temperature and chemical potential obtained in heavy ion collisions is presented.

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.06 · human participants 0.02 · controlled comparison 0.08 · randomized assignment 0.01 · states quantitative result 0.05 · compares with prior results 0.81 · mentions code or data availability 0.02.

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arXiv listing abstract v1. Results and the main claim are underlined; show every role.

The status of the energy dependence of the chemical freeze-out temperature and chemical potential obtained in heavy ion collisions is presented. Recent proposals for chemical freeze-out conditions are compared.

background contribution method result interpretation main claim

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	The status of the energy dependence of the chemical freeze-out temperature and chemical potential obtained in heavy ion collisions is presented.	contribution 0.83	0.36	0.13	unclear 0.65
s1	Recent proposals for chemical freeze-out conditions are compared.	contribution 0.83	0.29	0.06	unclear 0.59

What kind of paper the classifier reports this is: review 0.98 · evidence from literature 0.94.

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The paper

Original abstract

The status of the energy dependence of the chemical freeze-out temperature and chemical potential obtained in heavy ion collisions is presented. Recent proposals for chemical freeze-out conditions are compared.

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References

Forward citations

Cited by 4 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

The holographic QCD critical point is sensitive to quark flavors
hep-ph 2026-09 conditional novelty 6.0 of 10

In the flavor-dependent holographic V-QCD model, beta-equilibrated matter shows a first-order transition ending at a critical endpoint near (mu_B,T)=(225,155) MeV, which vanishes entirely when the same model is run un...
Finite-size effects and scaling properties of chiral and baryon-number fluctuations
hep-ph 2025-10 conditional novelty 5.0 of 10

In an effective chiral model retaining only the zero field mode, finite volume smooths the transition, regulates critical fluctuations, and shifts the baryon-kurtosis peak to lower collision energies.
Determining the Duration of the Hadronic Stage at RHIC-BES Energies via Resonance Suppression Using a Full Set of Rate Equations
nucl-th 2025-01 conditional novelty 5.0 of 10

Regeneration keeps K*/K falling linearly with time, giving hadronic-stage lifetimes 2 to 4 times longer than the exponential-decay estimate used by STAR.
Simulating QCD at finite density
hep-lat 2010-05 accept novelty 3.0 of 10

Lattice QCD at finite baryon density stays blocked by the sign problem; the three standard workarounds agree only at small chemical potential, and the existence of a QCD critical point remains undetermined.

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14 arXiv papers cite this in 24 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 15 sentences without a confident label

Uses its data or values 3 papers

taken from [ref] and we have parametrized the volume at chemical freeze-out (based on the data summarized in [ref] ) as

Determining the Duration of the Hadronic Stage at RHIC-BES Energies via Resonance Suppression Using a Full Set of Rate Equations · Framework · 0.99
In absolute chemical equilibrium at highest heavy ion reaction energy one obtains chemical freeze-out temperature $T ∼160-170$ MeV, which goes down to $∼50$ MeV at the lowest reaction energies [ref] .

Resonances and fluctuations in the statistical model · Introduction · 0.88
In Fig.[ref], chemical freeze-out curve [ref] , [ref] , obtained in statistical model analysis of particle ratios are shown (the red line).

A short course on Relativistic Heavy Ion Collisions · QCD phase diagram at finite baryon density · 0.92

Compares with it 2 papers

Now, for $N_t=4$ already, the estimated curvature of the pseudo-critical line $T_c(m_0^c,μ)$ was about 3 times less than that of the experimental freeze-out curve [ref] .

A QCD chiral critical point at small chemical potential: is it there or not? · Towards the continuum limit · 0.95
For comparison, in Fig.[ref], chemical freeze-out curve [ref] , [ref] , obtained in statistical model analysis of particle ratios are shown (the red line).

$J/\psi$ suppression and QCD phase diagram · introduction · 0.90

Cites it as support 1 paper

That such a model can in fact describe quantitatively the yield of most particles, including multi-strange ones, has in fact been indicated by fits to average particle abundances at AGS,SPS and RHIC energies [ref] .

Phenomenology of Strangeness enhancement in heavy ion collisions · Statistical hadronization phenomenology of strangeness enhancement · 0.97

Cites it as background 2 papers

Within the framework of the statistical hadronization model (SHM) it can be shown that, under the assumption of a rapid chemical freeze-out of a thermalized medium, particle abundances are described by statistical weights with only a small set of parameters: the chemical freeze-out temperature $$, the baryo-chemical potential $$, and the fireball volume $V$ [ref] .

Influence of modified light-flavor hadron spectra on particle yields in the statistical hadronization model · Introduction · 0.90
We refer to [ref] for a review of the statistical model.

Statistical hadronization phenomenology in $K/\pi$ fluctuations at ultra-relativistic energies · Introduction · 1.00

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