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Title: Correlations at RHIC and the Clustering of Color Sources

Abstract

We present our results on transverse momentum fluctuations and multiplicity fluctuations in the framework of the clustering of color sources. In this approach, elementary color sources - strings- overlap forming clusters, so the number of effective sources is modified. These clusters decay into particles with mean transverse momentum that depends on the number of elementary sources that conform each cluster and the area occupied by the cluster. We find a non-monotonic dependence of the pT and multiplicity fluctuations with the number of participants. In our approach, the physical mechanism responsible of these fluctuations is the same: the formation of clusters of strings that introduces correlations between the produced particles.

Authors:
 [1]
  1. Departamento de Fisica de Particulas, Universidad de Santiago de Compostela, 15782 Santiago de Compostela (Spain)
Publication Date:
OSTI Identifier:
21056863
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 892; Journal Issue: 1; Conference: QCHS7: 7. conference on quark confinement and the hadron spectrum, Ponta Delgada, Acores (Portugal), 2-7 Sep 2006; Other Information: DOI: 10.1063/1.2714424; (c) 2007 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; COLOR MODEL; CORRELATIONS; FLUCTUATIONS; HEAVY ION REACTIONS; MULTIPLE PRODUCTION; MULTIPLICITY; PARTICLE DECAY; STATISTICAL MODELS; STRING MODELS; TRANSVERSE MOMENTUM

Citation Formats

Ferreiro, E. G. Correlations at RHIC and the Clustering of Color Sources. United States: N. p., 2007. Web. doi:10.1063/1.2714424.
Ferreiro, E. G. Correlations at RHIC and the Clustering of Color Sources. United States. doi:10.1063/1.2714424.
Ferreiro, E. G. Tue . "Correlations at RHIC and the Clustering of Color Sources". United States. doi:10.1063/1.2714424.
@article{osti_21056863,
title = {Correlations at RHIC and the Clustering of Color Sources},
author = {Ferreiro, E. G.},
abstractNote = {We present our results on transverse momentum fluctuations and multiplicity fluctuations in the framework of the clustering of color sources. In this approach, elementary color sources - strings- overlap forming clusters, so the number of effective sources is modified. These clusters decay into particles with mean transverse momentum that depends on the number of elementary sources that conform each cluster and the area occupied by the cluster. We find a non-monotonic dependence of the pT and multiplicity fluctuations with the number of participants. In our approach, the physical mechanism responsible of these fluctuations is the same: the formation of clusters of strings that introduces correlations between the produced particles.},
doi = {10.1063/1.2714424},
journal = {AIP Conference Proceedings},
number = 1,
volume = 892,
place = {United States},
year = {Tue Feb 27 00:00:00 EST 2007},
month = {Tue Feb 27 00:00:00 EST 2007}
}
  • We present a good description of recent experimental data on forward dihadron azimuthal correlations measured in deuteron-gold collisions at the BNL Relativistic Heavy Ion Collider (RHIC), where monojet production has been observed. Our approach is based on the color glass condensate theory for the small-x degrees of freedom of the nuclear wave function, including the use of nonlinear evolution equations with running QCD coupling. Our analysis provides further evidence for the presence of saturation effects in RHIC data.
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