System size dependence of strangeness production at 158 AGeV

Details System size dependence of strangeness production at 158 AGeV System size dependence of strangeness production at 158 AGeV

2002-09-24

arxiv.org/abs/nucl-ex/0209018v1

Nucl.Phys. A715 (2003) 474-477

Physics

Nuclear Physics

Nuclear Experiment

5 pages, 3 figures, Presented at Quark Matter 2002, Nantes, France

Scientific paper

10.1016/S0375-9474(02)01453-7

Strange particle production in A+A interactions at 158 AGeV is studied by the CERN experiment NA49 as a function of system size and collision geometry. Yields of charged kaons, phi and Lambda are measured and compared to those of pions in central C+C, Si+Si and centrality-selected Pb+Pb reactions. An overall increase of relative strangeness production with the size of the system is observed which does not scale with the number of participants. Arguing that rescattering of secondaries plays a minor role in small systems the observed strangeness enhancement can be related to the space-time density of the primary nucleon-nucleon collisions.

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