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Title: Energy and rapidity dependence of the electric charge correlations at 20-158GeV beam energies at the CERN SPS (NA49)

Abstract

Electric charge correlations are studied with the Balance Function method for central Pb + Pb collisions at the CERN - SPS. The results on centrality selected Pb + Pb interactions at 40 and 158 AGeV are presented for the first time for two different rapidity intervals: The mid-rapidity region where a decrease of the width with increasing centrality of the collision is observed and the forward rapidity region where this effect vanishes. This could suggest a delayed hadronization scenario.In addition, the results from a first attempt to study the energy dependence of the Balance Function throughout the whole SPS energy range, will also be presented. The suitably scaled decrease of the width is approximately constant for the intermediate energies (30 to 80 AGeV) and gets stronger for the highest SPS and RHIC energies. On the other hand, both URQMD and HSD simulation results show no dependence on the collision energy.

Authors:
; ;  [1]
  1. Physics Department - University of Athens -15771 - Athens (Greece)
Publication Date:
OSTI Identifier:
20800063
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: 10.1063/1.2197403; (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; CERN SPS SYNCHROTRON; COMPUTERIZED SIMULATION; CORRELATIONS; ELECTRIC CHARGES; ENERGY DEPENDENCE; GEV RANGE; LEAD 208 REACTIONS; LEAD 208 TARGET; MOLECULAR DYNAMICS METHOD; PARTICLE RAPIDITY

Citation Formats

Christakoglou, P., Petridis, A., and Vassiliou, M.. Energy and rapidity dependence of the electric charge correlations at 20-158GeV beam energies at the CERN SPS (NA49). United States: N. p., 2006. Web. doi:10.1063/1.2197403.
Christakoglou, P., Petridis, A., & Vassiliou, M.. Energy and rapidity dependence of the electric charge correlations at 20-158GeV beam energies at the CERN SPS (NA49). United States. doi:10.1063/1.2197403.
Christakoglou, P., Petridis, A., and Vassiliou, M.. Tue . "Energy and rapidity dependence of the electric charge correlations at 20-158GeV beam energies at the CERN SPS (NA49)". United States. doi:10.1063/1.2197403.
@article{osti_20800063,
title = {Energy and rapidity dependence of the electric charge correlations at 20-158GeV beam energies at the CERN SPS (NA49)},
author = {Christakoglou, P. and Petridis, A. and Vassiliou, M.},
abstractNote = {Electric charge correlations are studied with the Balance Function method for central Pb + Pb collisions at the CERN - SPS. The results on centrality selected Pb + Pb interactions at 40 and 158 AGeV are presented for the first time for two different rapidity intervals: The mid-rapidity region where a decrease of the width with increasing centrality of the collision is observed and the forward rapidity region where this effect vanishes. This could suggest a delayed hadronization scenario.In addition, the results from a first attempt to study the energy dependence of the Balance Function throughout the whole SPS energy range, will also be presented. The suitably scaled decrease of the width is approximately constant for the intermediate energies (30 to 80 AGeV) and gets stronger for the highest SPS and RHIC energies. On the other hand, both URQMD and HSD simulation results show no dependence on the collision energy.},
doi = {10.1063/1.2197403},
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}
}