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Nuclear Theory

arXiv:nucl-th/0511083 (nucl-th)
[Submitted on 29 Nov 2005 (v1), last revised 6 Feb 2006 (this version, v3)]

Title:Particle Number Fluctuations in High Energy Nucleus-Nucleus Collisions from Microscopic Transport Approaches

Authors:V.P. Konchakovski, S. Haussler, M.I. Gorenstein, E.L. Bratkovskaya, M. Bleicher, H. Stoecker
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Abstract: Event-by-event multiplicity fluctuations in nucleus-nucleus collisions are studied within the HSD and UrQMD transport models. The scaled variances of negative, positive, and all charged hadrons in Pb+Pb at 158 AGeV are analyzed in comparison to the data from the NA49 Collaboration. We find a dominant role of the fluctuations in the nucleon participant number for the final hadron multiplicity fluctuations. This fact can be used to check different scenarios of nucleus-nucleus collisions by measuring the final multiplicity fluctuations as a function of collision centrality. The analysis reveals surprising effects in the recent NA49 data which indicate a rather strong mixing of the projectile and target hadron production sources even in peripheral collisions.
Comments: 14 pages, 12 figures, to be published in Phys. Rev. C
Subjects: Nuclear Theory (nucl-th); High Energy Physics - Phenomenology (hep-ph)
Cite as: arXiv:nucl-th/0511083
  (or arXiv:nucl-th/0511083v3 for this version)
  https://doi.org/10.48550/arXiv.nucl-th/0511083
Journal reference: Phys.Rev.C73:034902,2006
Related DOI: https://doi.org/10.1103/PhysRevC.73.034902

Submission history

From: Elena Bratkovskaya [view email]
[v1] Tue, 29 Nov 2005 12:52:39 UTC (284 KB)
[v2] Wed, 11 Jan 2006 11:55:58 UTC (276 KB)
[v3] Mon, 6 Feb 2006 12:07:16 UTC (278 KB)
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