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Title: Two Particle Azimuthal Correlations in C+Ta Collisions at 4.2A GeV

Abstract

In this report we present study of two particle azimuthal correlations for protons and negative pions in 4.2A GeV C+Ta collisions. Obtained results are compared with the analysis of azimuthal distribution of particles with respect to the reaction plane.

Authors:
 [1];  [2]
  1. Institute of Physics, Belgrade (Serbia and Montenegro)
  2. Faculty of natural science, Banja Luka (Bosnia and Herzegowina)
Publication Date:
OSTI Identifier:
21057095
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 899; Journal Issue: 1; Conference: 6. international conference of the Balkan Physical Union, Istanbul (Turkey), 22-26 Aug 2006; Other Information: DOI: 10.1063/1.2733062; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ANGULAR DISTRIBUTION; CARBON 12 REACTIONS; CORRELATIONS; GEV RANGE; NUMERICAL ANALYSIS; PIONS; PROTONS; TANTALUM 181 TARGET

Citation Formats

Simic, Lj., and Jotanovic, O.. Two Particle Azimuthal Correlations in C+Ta Collisions at 4.2A GeV. United States: N. p., 2007. Web. doi:10.1063/1.2733062.
Simic, Lj., & Jotanovic, O.. Two Particle Azimuthal Correlations in C+Ta Collisions at 4.2A GeV. United States. doi:10.1063/1.2733062.
Simic, Lj., and Jotanovic, O.. Mon . "Two Particle Azimuthal Correlations in C+Ta Collisions at 4.2A GeV". United States. doi:10.1063/1.2733062.
@article{osti_21057095,
title = {Two Particle Azimuthal Correlations in C+Ta Collisions at 4.2A GeV},
author = {Simic, Lj. and Jotanovic, O.},
abstractNote = {In this report we present study of two particle azimuthal correlations for protons and negative pions in 4.2A GeV C+Ta collisions. Obtained results are compared with the analysis of azimuthal distribution of particles with respect to the reaction plane.},
doi = {10.1063/1.2733062},
journal = {AIP Conference Proceedings},
number = 1,
volume = 899,
place = {United States},
year = {Mon Apr 23 00:00:00 EDT 2007},
month = {Mon Apr 23 00:00:00 EDT 2007}
}
  • Two particle azimuthal correlations are studied in 4.2A GeV C+Ta collisions observed with the 2-m propane bubble chamber exposed at JINR Dubna Synchrophasotron. The correlations are analyzed both for protons and negative pions, and their dependence on the collision centrality, rapidity and rapidity difference is investigated. It is found that protons show a weak back-to-back correlations, while a side-by-side correlations are observed for negative pions. Restricting both protons to the target or projectile fragmentation region, the side-by-side correlations are observed for protons also. Using the two particle correlation function, the flow analysis is performed and intensity of directed flow ismore » determined without event-by event estimation of the reaction plane.« less
  • Two-particle azimuthal correlations are studied in 4.2 GeV/{ital c} per nucleon {ital d}C, {alpha}C, and CC collisions with a propane bubble chamber at JINR Dubna Synchrophasotron. It is found that the azimuthal correlations are different for different pairs of secondary particles, and that they also depend on the mass of the projectiles and the collision centrality. The majority of the observed characteristics can be accounted for by the kinematic correlations calculated from the model of independent nucleon-nucleon collisions. The only exception is the effect of close pairing of like particles considered to be due to the identical particle effect formore » pion pairs and to short-range strong interactions for proton pairs.« less
  • A data-driven method was applied to Au+Au collisions at root S-NN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Delta eta-dependent and Delta eta-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a Delta eta-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of. within the measured range of pseudorapidity vertical bar eta vertical bar < 1. In 20-30% central Au+Au collisions, the relative flow fluctuation was found to be 34% +/- 2%(stat.) +/- 3%(sys.) for particles with transversemore » momentum p(T) less than 2 GeV/c. The Delta eta-dependent part, attributed to nonflow correlations, is found to be 5% +/- 2%(sys.) relative to the flow of the measured second harmonic cumulant at vertical bar Delta eta vertical bar > 0.7. (C) 2015 The Authors. Published by Elsevier B.V.« less
  • A data-driven method was applied to Au+Au collisions at √sNN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Δη-dependent and Δη-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a Δη-independent component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of η within the measured range of pseudorapidity |η| < 1. In 20–30% central Au+Au collisions, the relative flow fluctuation was found to be 34%±2%(stat.)±3%(sys.) for particles with transverse momentum p T less than 2 GeV/ c. The Δη-dependent part,more » attributed to nonflow correlations, is found to be 5% ± 2%(sys.) relative to the flow of the measured second harmonic cumulant at |Δη| > 0.7. (author)« less
  • In this study, a data-driven method was applied to Au+Au collisions at √ sNN = 200 GeV made with the STAR detector at RHIC to isolate pseudorapidity distance Δη-dependent and Δη-independent correlations by using two- and four-particle azimuthal cumulant measurements. We identified a component of the correlation, which is dominated by anisotropic flow and flow fluctuations. It was also found to be independent of η within the measured range of pseudorapidity |η| < 1. In 20–30% central Au+Au collisions, the relative flow fluctuation was found to be 34% ± 2%(stat.) ± 3% for particles with transverse momentum pT less thanmore » 2 GeV/c. The Δη-dependent part, attributed to nonflow correlations, is found to be 5% ± 2%(sys.) relative to the flow of the measured second harmonic cumulant at |Δη| > 0.7.« less