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Multiplicity of charged particles in Pb-Pb collisions at SPS energies

The NA57 collaboration
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Abstract

The multiplicity of charged particles in the central rapidity region has been measured by the NA57 experiment in Pb--Pb collisions at the CERN SPS at two beam momenta: 158 A GeV/{\it c} and 40 A GeV/{\it c}. The value of $dN_{ch}/dη$ at the maximum has been determined and its behaviour as a function of centrality has been studied in the centrality range covered by NA57 (about 50% of the inelastic cross section). The multiplicity increases approximately logarithmically with the centre of mass energy.

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The NA57 collaboration. 2004-06-01. Multiplicity of charged particles in Pb-Pb collisions at SPS energies. https://doi.org/10.1088/1742-6596%2F5%2F1%2F006

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