System-size dependence of Lambda and Xi production in nucleus-nucleus collisions at 40A and 158A GeV measured at the CERN Super Proton Synchrotron
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Anticic-2009-System-size dependen.pdf
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774.44 KB
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Author(s)
Veres, Gabor
Roland, Christof E
Roland, Gunther M
Alternative Title
System-size dependence of Λ and Ξ production in nucleus-nucleus collisions at 40A and 158A GeV measured at the CERN Super Proton Synchrotron
Date Issued
September 2009
Journal
Physical Review C
Publisher
American Physical Society
Citation
NA49 Collaboration et al. “System-size dependence of Lambda and Xi production in nucleus-nucleus collisions at 40A and 158A GeV measured at the CERN Super Proton Synchrotron.” Physical Review C 80.3 (2009): 034906. © 2009 American Physical Society.
Version
Final published version
Abstract
Results on Lambda, Lambda[over-bar], and Xi- production in centrality selected Pb+Pb reactions at 40A and 158A GeV and in near-central C+C and Si+Si reactions at 158A GeV are presented. Transverse mass spectra, rapidity spectra, and multiplicities in dependence of the system size are discussed. Comparisons to transport models (ultrarelativistic quantum molecular dynamics and hadron string dynamics) and to the core-corona approach are performed. Although Lambda and Lambda[over-bar] production can be described by transport models reasonably well, these models do not agree with the Xi- measurements. However, the core-corona picture fits very well the system-size dependence of Lambda and Xi-, whereas it agrees less well with the Lambda[over-bar] data.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
http://dx.doi.org/10.1103/PhysRevC.80.034906
