The statistical hadronization model approach to $\sqrt{s_{NN}}=200$ GeV Au-Au collisions: $p_T$-spectra fits and global variable predictions

Abstract

Three possible scenarios of the statistical hadronization model are reexamined with the use of the $p_T$ spectra of the PHENIX and very low $p_T$ PHOBOS measurements at $\sqrt{s_{NN}}=200$ GeV. These scenarios are: (\textit{a}) full chemical non-equilibrium, (\textit{b}) strangeness chemical non-equilibrium and (\textit{c}) chemical equilibrium. Fits to the spectra are done within the Cracow single-freeze-out model, which takes into account both the expansion and resonance decays. Predictions for spectra of $\varphi$, $K(892{)}^{\ast 0}$ and ${\pi }^0$ are also given. The global variables like the transverse energy at midrapidity, the charged particle multiplicity at midrapidity and the total multiplicity of charged particles are evaluated and their predicted values agree qualitatively well with the experimental data. The thorough analysis within this model suggests that the chemical full non-equilibrium case is the least likely and both other cases are of the similar likelihood. It is also shown that if the full chemical non-equilibrium freeze-out took place it could manifest itself in the enhancement of the ${\pi }^0$-production at very low transverse momenta.

arXiv comment19 pages, 16 figures (included). This is the final version accepted in Phys. Rev. C. Figs.9 and 10 have been changed since it turned out that the data on ϕmeson production were corrected for the branching ratio of ϕdecay into K_{+}K_{-}

References in corpus (20)

• Thermal phenomenology of hadrons from 200 AGeV S+S collisions
• Identified Charged Particle Spectra and Yields in Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Suppressed pi^0 Production at Large Transverse Momentum in Central Au+Au Collisions at sqrt(s_NN) = 200 GeV
• Identified particle distributions in pp and Au+Au collisions at sqrt{s_NN}=200 GeV
• Centrality dependence of pi^[+/-], K^[+/-], p and p-bar production from sqrt(s_NN)=130 GeV Au + Au collisions at RHIC
• Systematic Studies of the Centrality and sqrt(s_NN) Dependence of dE_T/deta and dN_ch/deta in Heavy Ion Collisions at Mid-rapidity
• Nuclear Stopping in Au+Au Collisions at sqrt(sNN) = 200 GeV
• Description of the RHIC p_T-spectra in a thermal model with expansion
• Phi meson production in Au+Au and p+p collisions at sqrt (s)=200 GeV
• K(892)* Resonance Production in Au+Au and p+p Collisions at sqrt(sNN) = 200 GeV at RHIC
• Measurement of the mid-rapidity transverse energy distribution from $\sqrt{s_{NN}}=130$ GeV Au+Au collisions at RHIC
• Production of phi mesons at mid-rapidity in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC
• Strange particle production at RHIC in a single-freeze-out model
• Centrality Dependence of Bulk Fireball Properties at RHIC
• Results on Identified Hadrons from the PHENIX Experiment at RHIC
• Particle yield fluctuations and chemical non-equilibrium at RHIC
• Particle Production at Very Low Transverse Momenta in Au+Au Collisions at s(NN)**1/2 = 200 GeV
• Transverse energy per charged particle at relativistic energies from a statistical model with expansion
• Centrality dependence of global variables in relativistic heavy ion collisions: Final $p_T$ data analysis in the framework of a statistical model
• Centrality dependence of strangeness and (anti)hyperon production at BNL RHIC

Cited by in corpus (7)

• Explanation of hadron transverse-momentum spectra in heavy-ion collisions at sqrt(sNN) = 2.76 TeV within chemical non-equilibrium statistical hadronization model
• Transverse-momentum spectra of strange particles produced in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}}=2.76$ TeV in the chemical non-equilibrium model
• Transverse Energy per Charged Particle and Freeze-Out Criteria in Heavy-Ion Collisions
• Charged Particle and Photon Multiplicity, and Transverse Energy Production in High-Energy Heavy-Ion Collisions
• Saturation of Transverse Energy per Charged Hadron and Freeze-Out Criteria in Heavy-Ion Collisions
• Saturation of $E_T/N_{ch}$ and Freeze-Out Criteria in Heavy-Ion Collisions
• Transverse Energy per Charged Particle in Heavy-Ion Collisions: Role of Collective Flow