Strange freezeout

Abstract

We argue that known systematics of hadron cross sections may cause different particles to freeze out of the fireball produced in heavy-ion collisions at different times. We find that a simple model with two freezeout points is a better description of data than that with a single freezeout, while still remaining predictive. The resulting fits seem to present constraints on the late stage evolution of the fireball, including the tantalizing possibility that the QCD chiral transition influences the yields at sqrt(S)=2700 GeV and the QCD critical point those at sqrt(S)=17.3 GeV.

References in corpus (8)

• Systematic Measurements of Identified Particle Spectra in pp, d+Au and Au+Au Collisions from STAR
• The QCD transition temperature: results with physical masses in the continuum limit II.
• QCD at finite chemical potential with six time slices
• Energy dependence of phi meson production in central Pb+Pb collisions at sqrt(s_nn) = 6 to 17 GeV
• Measurements of $\varphi$ meson production in relativistic heavy-ion collisions at RHIC
• Strange and Multi-strange Particle Production in Au+Au Collisions at $\sqrt{s_{NN}}$ = 62.4 GeV
• Non-thermal p/pi ratio at LHC as a consequence of hadronic final state interactions
• Chemical freeze-out in ultra-relativistic heavy ion collisions at sqrt(s)_NN = 130 and 200 GeV

Cited by in corpus (56)

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• Freeze-out conditions from strangeness observables at RHIC
• Interacting hadron resonance gas model in K-matrix formalism
• Strange quark chiral phase transition in hot 2+1-flavor magnetized quark matter
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• Hadronization effects on the baryon-strangeness correlation in quark combination models
• Recent theoretical developments on QCD matter at finite temperature and density
• A short introduction to heavy-ion physics
• Multiplicity dependence freeze-out scenarios in pp collisions at $\sqrt{s}$ = 7 TeV
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• Finite size effect on the thermodynamics of a hot and magnetized hadron resonance gas
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• Flow fluctuations and kinetic freeze-out of identified hadrons at energies available at the CERN Super Proton Synchrotron
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• Melting and freeze-out conditions of hadrons in a thermal medium
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• Chemical freeze-out of light nuclei in high energy nuclear collisions and resolution of the hyper-triton chemical freeze-out puzzle
• Flavour-Dependent Chemical Freeze-Out of Light Nuclei in Relativistic Heavy-Ion Collisions