Chemical non-equilibrium and deconfinement in 200 A GeV Sulphur induced reactions
arXiv:hep-ph/9806386 · doi:10.1103/PhysRevC.59.947
Abstract
We interpret hadronic particle abundances produced in S--Au/W/Pb 200 A GeV reactions in terms of the final state hadronic phase space model and determine by a data fit of the chemical hadron freeze-out parameters. Allowing for the flavor abundance non-equilibrium a highly significant fit to experimental particle abundance data emerges, which supports possibility of strangeness distillation. We find under different strategies stable values for freeze-out temperature T_f=143\pm3 MeV, baryochemical potential μ_B= 173\pm6 MeV, ratio of strangeness (γ_s) and light quark (γ_q) phase space occupancies γ_s/γ_q=0.60\pm0.02, and γ_q=1.22\pm0.05 without accounting for collective expansion (radial flow). When introducing flow effects which allow a consistent description of the transverse mass particle spectra, yielding |v_c|=0.49\pm0.01c, we find γ_s/γ_q=0.69\pm0.03, γ_q=1.41\pm0.08. The strange quark fugacity is fitted at λ_s=1.00\pm0.02 suggesting chemical freeze-out directly from the deconfined phase.
10 pages including 3 figures and 3 tables, submitted to Phys. Rev. C Sections introduced (v2), Last paragraph in section 2 edited (v3) Effect of radial flow described (v4)
References in corpus (12)
- Evidence for a high entropy phase in nuclear collisions
- Charged Particle Production in Proton-, Deuteron-, Oxygen- and Sulphur-Nucleus Collisions at 200 GeV per Nucleon
- Gluon production, cooling and entropy in nuclear collisions
- Hot hadronic matter and strange anti-baryons
- Chemical equilibration of strangeness
- On Chemical Equilibrium in Nuclear Collisions
- Search for Charged Strange Quark Matter Produced in 11.5 A GeV/c Au + Pb Collisions
- Strange Particles from Dense Hadronic Matter
- Proton and Antiproton Distributions at Mid-Rapidity in Proton-Nucleus and Sulphur-Nucleus Collisions
- Search for Exotic Strange Quark Matter in High Energy Nuclear Reactions
- Formation and Evolution of the Quark-Gluon Plasma
- Confronting particle emission scenarios with strangeness data
Cited by in corpus (52)
- Fluctuation Probes of Quark Deconfinement
- Energy and system size dependence of chemical freeze-out in relativistic nuclear collisions
- THERMUS -- A Thermal Model Package for ROOT
- Chemical equilibrium study in nucleus-nucleus collisions at relativistic energies
- Confronting LHC data with the statistical hadronization model
- THERMINATOR 2: THERMal heavy IoN generATOR 2
- Thermal-FIST: A package for heavy-ion collisions and hadronic equation of state
- Centrality Dependence of Thermal Parameters Deduced from Hadron Multiplicities in Au + Au Collisions at sqrt{s_{NN}} = 130 GeV
- Last Call for RHIC Predictions
- Hadron production and QGP Hadronization in Pb--Pb collisions at TeV
- Hadron Production and Phase Changes in Relativistic Heavy Ion Collisions
- Local equilibrium in heavy ion collisions. Microscopic model versus statistical model analysis
- Evidence for Statistical Production of J/psi Mesons in Nuclear Collisions at 158--200 A GeV
- Melting Hadrons, Boiling Quarks
- Hadron-Resonance Gas at Freeze-out: Reminder on Importance of Repulsive Interactions
- Bose-Einstein condensation of pions in heavy-ion collisions at the CERN Large Hadron Collider (LHC) energies
- Strange hadron production in heavy ion collisions from SPS to RHIC
- Transverse-momentum spectra of strange particles produced in Pb+Pb collisions at TeV in the chemical non-equilibrium model
- Discovery of Quark-Gluon-Plasma: Strangeness Diaries
- Universal hadronization condition in heavy ion collisions at GeV and at TeV
- Nonextensive Statistics and Multiplicity Distribution in Hadronic Collisions
- Equation of state of resonance-rich matter in the central cell in heavy-ion collisions at =200 AGeV
- Local equilibrium in heavy-ion collisions: Microscopic analysis of a central cell versus infinite matter
- Strangeness Chemical Equilibration in QGP at RHIC and LHC
- Quark-Gluon Plasma Fireball
- Expected Production of Strange Baryons and Antibaryons in Baryon-Poor QGP
- Hadron yields and fluctuations at the CERN Super Proton Synchrotron: system size dependence from Pb+Pb to p+p collisions
- Evolution of strangeness in equilibrating and expanding quark-gluon plasma
- Strangeness and Quark Gluon Plasma
- Statistical hadron-gas treatment of systems created in proton-proton interactions at CERN SPS
- Violation of energy-per-hadron scaling in a resonance matter
- Statistical description with anisotropic momentum distributions for hadron production in nucleus-nucleus collisions
- Transition to resonance-rich matter in heavy ion collisions at RHIC energies
- Analysis of particle production in ultra-relativistic heavy ion collisions within a two-source statistical model
- Strange mesons from quark and hadron matter: a comparison
- Possible glueball production in relativistic heavy-ion collisions
- Deconfinement energy threshold: analysis of hadron yields at 11.6 A GeV
- Strangeness and Quark--Gluon Plasma
- Low-m_t charged pion asymmetry enhancement from hadronization of QGP
- Multiplicities and bulk thermodynamic quantities at \mathversion{bold}{} GeV with SHARE
- Strangeness, Equilibration, Hadronization
- Short-range two-particle correlations from statistical clusters
- Universal QGP Hadronization Conditions at RHIC and LHC
- Quark Coalescence and Hadronic Equilibrium
- QCD phase transition studied by means of hadron production
- Strangeness production in heavy ion collisions at SPS and RHIC within two-source statistical model
- Particle abundances and spectra in the hydrodynamical description of relativistic nuclear collisions with light projectiles
- Study on chemical equilibrium in nucleus-nucleus collisions at relativistic energies
- Possible production of exotic baryonia in relativistic heavy-ion collisions
- Bose-Einstein Condensation and Dissipative Dynamics in a Relativistic Pion Gas
- The Mar(e)k of QGP: Strangeness
- Quark-Gluon Plasma in Pb--Pb 158 A GeV collisions: Evidence from strange particle abundances and the Coulomb effect