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Title: Non-Gaussian Effects in Identical Pion Correlation Function at STAR

Abstract

Preliminary femtoscopic results on identical pions from high statistics data set of Au+Au collisions at {radical}(s{sub NN}) = 200 GeV taken during the fourth RHIC run are presented. The measured three-dimensional correlation function is studied at low relative momenta using the Gaussian parametrization and the Levy stable parametrization. The latter is expected to better describe the data. As the results show, both parametrizations underestimate the peak of the measured correlation function equally.

Authors:
 [1]
  1. Nuclear Physics Institute, Academy of Sciences of the Czech Republic, 250 68 Rez (Czech Republic)
Publication Date:
OSTI Identifier:
20800132
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 828; Journal Issue: 1; Conference: 35. internationals symposium on multiparticle dynamics; Workshop on particle correlations and femtoscopy, Kromeriz (Czech Republic), 9-17 Aug 2005; Other Information: DOI: 10.1063/1.2197466; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; BROOKHAVEN RHIC; CORRELATION FUNCTIONS; GEV RANGE; GOLD 197 REACTIONS; GOLD 197 TARGET; MULTIPARTICLE SPECTROMETERS; PARTICLE IDENTIFICATION; PIONS; STATISTICAL MODELS; STATISTICS

Citation Formats

Bystersky, M. Non-Gaussian Effects in Identical Pion Correlation Function at STAR. United States: N. p., 2006. Web. doi:10.1063/1.2197466.
Bystersky, M. Non-Gaussian Effects in Identical Pion Correlation Function at STAR. United States. doi:10.1063/1.2197466.
Bystersky, M. Tue . "Non-Gaussian Effects in Identical Pion Correlation Function at STAR". United States. doi:10.1063/1.2197466.
@article{osti_20800132,
title = {Non-Gaussian Effects in Identical Pion Correlation Function at STAR},
author = {Bystersky, M.},
abstractNote = {Preliminary femtoscopic results on identical pions from high statistics data set of Au+Au collisions at {radical}(s{sub NN}) = 200 GeV taken during the fourth RHIC run are presented. The measured three-dimensional correlation function is studied at low relative momenta using the Gaussian parametrization and the Levy stable parametrization. The latter is expected to better describe the data. As the results show, both parametrizations underestimate the peak of the measured correlation function equally.},
doi = {10.1063/1.2197466},
journal = {AIP Conference Proceedings},
number = 1,
volume = 828,
place = {United States},
year = {Tue Apr 11 00:00:00 EDT 2006},
month = {Tue Apr 11 00:00:00 EDT 2006}
}
  • Preliminary femtoscopic results on identical pions from high statistics data set of Au+Au collisions at {radical}s{sub NN} = 200 GeV taken during the fourth RHIC run are presented. The measured three-dimensional correlation function is studied at low relative momenta using the Gaussian parametrization and the Levy stable parametrization. The latter is expected to better describe the data. As the results show, both parametrizations underestimate the peak of the measured correlation function equally.
  • The work of J. A. Wheeler in the mid 1960's showed that forsmooth equations of state no stable stellar configurations with centraldensities above that corresponding to the limiting mass of 'neutronstars' (in the generic sense) were stable against acoustical vibrationalmodes. A perturbation would cause any such star to collapse to a blackhole or explode. Accordingly, there has been no reason to expect that astable degenerate family of stars with higher density than the knownwhite dwarfs and neutron stars might exist. We have found a class ofexceptions corresponding to certain equations of state that describe afirst order phase transition. We discussmore » how such a higher density familyof stars could be formed in nature, and how the promising new explorationof oscillations in the X-ray brightness of accreting neutron stars mightprovide a means of identifying them. Our proof of the possible existenceof a third family of degenerate stars is one of principle and rests ongeneral principles like causality, microstability of matter and GeneralRelativity.« less
  • Two basic correlation functions are calculated for a model of N harmonically interacting identical particles in a parabolic potential well. The density and the pair correlation function of the model are investigated for the boson case. The dependence of these static response properties on the complete range of the temperature and of the number of particles is obtained. The calculation technique is based on the path integral approach of symmetrized density matrices for identical particles in a parabolic confining well. {copyright} {ital 1997} {ital The American Physical Society}
  • The ground state space-time correlation function is calcuilted for both boson and fermion systems, by using the Bogoliubov canonicai transformation technique. The method employed is valid for fluids exhibiting quantum degeneracy, such as He II. (auth)