Energy dependence of {lambda} and {xi} production in central Pb+Pb collisions at 20A,30A,40A,80A, and 158A GeV measured at the CERN Super Proton Synchrotron

Results on {lambda},{lambda},{xi}{sup -}, and {xi}{sup +} production in central Pb+Pb reactions at 20A,30A,40A,80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) a...

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Published in:Physical review. C, Nuclear physics Nuclear physics, 2008-09, Vol.78 (3)
Main Authors: Alt, C., Blume, C., Bramm, R., Dinkelaker, P., Flierl, D., Kliemant, M., Kniege, S., Lungwitz, B., Meurer, C., Mitrovski, M., Renfordt, R., Richard, A., Schuster, T., Stock, R., Strabel, C., Stroebele, H., Utvic, M., Wetzler, A., Anticic, T., Kadija, K.
Format: Article
Language:English
Subjects:
ATOM-ATOM COLLISIONS
CERN
COLLISIONS
COMPARATIVE EVALUATIONS
ENERGY DEPENDENCE
GEV RANGE
LAMBDA PARTICLES
LEAD
MASS SPECTRA
MULTIPLICITY
NUCLEAR PHYSICS AND RADIATION PHYSICS
PARTICLE PRODUCTION
PARTICLES
PROTONS
SYNCHROTRONS
XI PARTICLES
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Summary:Results on {lambda},{lambda},{xi}{sup -}, and {xi}{sup +} production in central Pb+Pb reactions at 20A,30A,40A,80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) and statistical hadron gas models are shown. Although the latter provide a reasonable description of all particle yields, the first class of models fails to match the {xi}{sup -} and {xi}{sup +} multiplicities.
ISSN:0556-2813
1089-490X
DOI:10.1103/PHYSREVC.78.034918