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System size dependence of strangeness production at 158 AGeV
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 reacti...
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Lenguaje: | eng |
Publicado: |
2002
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/S0375-9474(02)01453-7 http://cds.cern.ch/record/582729 |
Sumario: | 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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