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HK: Physik der Hadronen und Kerne
HK 21: Heavy Ions II
HK 21.5: Talk
Tuesday, March 9, 2004, 16:45–17:00, F
System size dependence of strange hadron production at the SPS* — •P. Dinkelaker1, C. Alt1, C. Blume1, P. Buncic1, D. Flierl1, V. Friese2,3, M. Gazdzicki1, M. Kliemant1, S. Kniege1, I. Kraus2, B. Lungwitz1, C. Meurer1, M. Mitrovski1, C. Hoehne3, S. Radomski2, R. Renfordt1, A. Richard1, A. Sandoval2, R. Stock1 und H. Ströbele1 — 1Institut für Kernphysik, Universität Frankfurt — 2Gesellschaft für Schwerionenforschung (GSI), Darmstadt — 3Fachbereich Physik der Universität, Marburg
It is well known that the relative production of strange hadrons in
central Pb+Pb collisions is enhanced over elementary p+p collisions. To
study the onset of this enhancement data were taken for different nuclei
(C+C and Si+Si) and minimum bias Pb+Pb.
The NA49 collaboration presents data to clarify the system size dependence
at 40 and 158 A·GeV. New data on the dependence of kaon production on
centrality in Pb+Pb collisions at 40 A·GeV will be presented. The
result
will be compared to the centrality dependence of other hadron species at
this energy and also at 158 A·GeV and the AGS energies.
The experimental results will be compared to dynamical and statistical
model approaches. The available data will help to identify the possible
onset of the observed differences and motivates a detailed energy scan
program with light nuclei as a future project at the CERN SPS.
*Supported by BMBF and GSI