System-size and centrality dependence of charged kaon and pion production in nucleus-nucleus collisions at 40A GeV and 158A GeV beam energy
Name
Anticic-2012-System-size and centrality dependence of charged kaon and pion production.pdf
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1.22 MB
Format
Adobe PDF
Checksum (MD5)
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Author(s)
Roland, Christof E
Roland, Gunther M
Date Issued
November 2012
Journal
Physical Review C
Publisher
American Physical Society
Citation
Anticic, T. et al. “System-size and Centrality Dependence of Charged Kaon and Pion Production in Nucleus-nucleus Collisions at 40A GeV and 158A GeV Beam Energy.” Physical Review C 86.5 (2012). ©2012 American Physical Society
Version
Final published version
Abstract
Measurements of charged pion and kaon production are presented in centrality selected Pb+Pb collisions at 40A GeV and 158A GeV beam energy as well as in semicentral C+C and Si+Si interactions at 40A GeV. Transverse mass spectra, rapidity spectra, and total yields are determined as a function of centrality. The system-size and centrality dependence of relative strangeness production in nucleus-nucleus collisions at 40A GeV and 158A GeV beam energy are derived from the data presented here and from published data for C+C and Si+Si collisions at 158A GeV beam energy. At both energies a steep increase with centrality is observed for small systems followed by a weak rise or even saturation for higher centralities. This behavior is compared to calculations using transport models (ultra-relativistic quantum molecular dynamics and hadron-string dynamics), a percolation model, and the core-corona approach.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
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
https://doi.org/10.1103/PhysRevC.86.054903
