Thermodynamically Anomalous Regions As A Mixed Phase Signal

Abstract

Using the most advanced model of the hadron resonance gas we reveal, at chemical freeze-out, remarkable irregularities such as an abrupt change of the effective number of degrees of freedom and plateaus in the collision-energy dependence of the entropy per baryon, total pion number per baryon, and thermal pion number per baryon at laboratory energies 6.9-11.6 AGeV. On the basis of the generalized shock adiabat model we show that these plateaus give evidence for the thermodynamic anomalous properties of the mixed phase at its boundary to the quark-gluon plasma (QGP). A new signal for QGP formation is suggested and justified.

15 pages, 5 figures, minor changes in text

References in corpus (5)

• The QCD transition temperature: results with physical masses in the continuum limit
• Onset of deconfinement in nucleus-nucleus collisions: Review for pedestrians and experts
• Chemical Freeze-out of Strange Particles and Possible Root of Strangeness Suppression
• Simple Solution to the Strangeness Horn Description Puzzle
• Quark Gluon Bags as Reggeons

Cited by in corpus (16)

• Hadron Resonance Gas Model with Induced Surface Tension
• Threshold Collision Energy of the QCD Phase Diagram Tricritical Endpoint
• Equation of state and sound velocity of hadronic gas with hard-core interaction
• New Signals of Quark-Gluon-Hadron Mixed Phase Formation
• Isothermal compressibility of hadronic matter formed in relativistic nuclear collisions
• Model of the Phase Transition Mimicking the Pasta Phase in Cold and Dense Quark-Hadron Matter
• Hard-core Radius of Nucleons within the Induced Surface Tension Approach
• Second virial coefficients of light nuclear clusters and their chemical freeze-out in nuclear collisions
• Possible signals of two QCD phase transitions at NICA-FAIR energies
• Recent Results of the Hadron Resonance Gas Model and the Chemical Freeze-out of Strange Hadrons
• A possible evidence of observation of two mixed phases in nuclear collisions
• Classical excluded volumes of loosely bound light (anti)nuclei and their chemical freeze-out in heavy ion collisions
• Probing the tricritical endpoint of QCD phase diagram at NICA-FAIR energies
• Triple nuclear collisions - a new method to explore the matter properties under new extreme conditions
• Chemical freeze-out of light nuclei in high energy nuclear collisions and resolution of the hyper-triton chemical freeze-out puzzle
• Evidence of the mixed phase formation in nucleus-nucleus collisions