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Title: Statistical hadronization model approach to {radical}(s{sub NN})=200 GeV Au-Au collisions: p{sub T}-spectra fits and global variable predictions

Abstract

Three possible scenarios of the statistical hadronization model are reexamined with the use of the p{sub T} spectra of the PHENIX and very low p{sub T} PHOBOS measurements at {radical}(s{sub NN})=200 GeV. These scenarios are as follows: (a) full chemical nonequilibrium, (b) strangeness chemical nonequilibrium, and (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 {phi},K(892){sup *0}, and {pi}{sup 0} are also given. Global variables such as 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 nonequilibrium case is the least likely and both other cases are of similar likelihood. It is also shown that if the full chemical nonequilibrium freeze-out took place it could manifest itself in the enhancement of the {pi}{sup 0} production at very low transverse momenta.

Authors:
 [1]
  1. Institute of Theoretical Physics, University of Wroclaw, Pl. Maksa Borna 9, PL-50-204 Wroclaw (Poland)
Publication Date:
OSTI Identifier:
20990966
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. C, Nuclear Physics; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevC.75.014903; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CHARGED PARTICLES; COLLISIONS; DECAY; FREEZING OUT; GEV RANGE 100-1000; HEAVY ION REACTIONS; K*-892 MESONS; MASS NUMBER; MULTIPLICITY; PIONS NEUTRAL; SPECTRA; STATISTICAL MODELS; STRANGENESS; TRANSVERSE ENERGY; TRANSVERSE MOMENTUM

Citation Formats

Prorok, Dariusz. Statistical hadronization model approach to {radical}(s{sub NN})=200 GeV Au-Au collisions: p{sub T}-spectra fits and global variable predictions. United States: N. p., 2007. Web. doi:10.1103/PHYSREVC.75.014903.
Prorok, Dariusz. Statistical hadronization model approach to {radical}(s{sub NN})=200 GeV Au-Au collisions: p{sub T}-spectra fits and global variable predictions. United States. doi:10.1103/PHYSREVC.75.014903.
Prorok, Dariusz. Mon . "Statistical hadronization model approach to {radical}(s{sub NN})=200 GeV Au-Au collisions: p{sub T}-spectra fits and global variable predictions". United States. doi:10.1103/PHYSREVC.75.014903.
@article{osti_20990966,
title = {Statistical hadronization model approach to {radical}(s{sub NN})=200 GeV Au-Au collisions: p{sub T}-spectra fits and global variable predictions},
author = {Prorok, Dariusz},
abstractNote = {Three possible scenarios of the statistical hadronization model are reexamined with the use of the p{sub T} spectra of the PHENIX and very low p{sub T} PHOBOS measurements at {radical}(s{sub NN})=200 GeV. These scenarios are as follows: (a) full chemical nonequilibrium, (b) strangeness chemical nonequilibrium, and (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 {phi},K(892){sup *0}, and {pi}{sup 0} are also given. Global variables such as 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 nonequilibrium case is the least likely and both other cases are of similar likelihood. It is also shown that if the full chemical nonequilibrium freeze-out took place it could manifest itself in the enhancement of the {pi}{sup 0} production at very low transverse momenta.},
doi = {10.1103/PHYSREVC.75.014903},
journal = {Physical Review. C, Nuclear Physics},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 15 00:00:00 EST 2007},
month = {Mon Jan 15 00:00:00 EST 2007}
}