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Centrality determination of Au + Au collisions at 1.23A GeV with HADES

  • HADES Collaboration
  • GSI Helmholtz Center
  • Cluster of Excellence E-conversion
  • Technical University of Munich
  • Johann Wolfgang Goethe University
  • University Paris-Sud
  • Joint Inst. for Nuclear Research
  • Jagiellonian University
  • LIP-Laboratorio de Instrumentacao e Fisica Experimental de Particulas
  • Nuclear Physics Institute of the Cas
  • Justus-Liebig-Universität Gießen
  • HelmholtzZentrum Dresden-Rossendorf
  • Institute of Physics SAS
  • Technische Universität Darmstadt
  • Universidad de Santiago de Compostela
  • Institute for Nuclear Research of the Russian Academy of Sciences
  • ITEP
  • National Research Nuclear University MEPhI
  • University of Cyprus

Research output: Contribution to journalArticlepeer-review

60 Scopus citations

Abstract

The centrality determination for Au + Au collisions at 1.23A GeV, as measured with HADES at the GSI-SIS18, is described. In order to extract collision geometry related quantities, such as the average impact parameter or number of participating nucleons, a Glauber Monte Carlo approach is employed. For the application of this model to collisions at this relatively low centre-of-mass energy of s NN =2.42 GeV special investigations were performed. As a result a well defined procedure to determine centrality classes for ongoing analyses of heavy-ion data is established.

Original languageEnglish
Article number85
JournalEuropean Physical Journal A
Volume54
Issue number5
DOIs
StatePublished - 1 May 2018

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