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Energy dependence of Λ and Ξ production in central Pb+Pb collisions at 20A,30A,40A,80A, and 158A GeV measured at the CERN Super Proton Synchrotron

  • C. Alt
  • , T. Anticic
  • , B. Baatar
  • , D. Barna
  • , J. Bartke
  • , L. Betev
  • , H. Białkowska
  • , C. Blume
  • , B. Boimska
  • , M. Botje
  • , J. Bracinik
  • , R. Bramm
  • , P. Bunčić
  • , V. Cerny
  • , P. Christakoglou
  • , P. Chung
  • , O. Chvala
  • , J. G. Cramer
  • , P. Csató
  • , P. Dinkelaker
  • V. Eckardt, D. Flierl, Z. Fodor, P. Foka, V. Friese, J. Gál, M. Gaździcki, V. Genchev, E. Gładysz, K. Grebieszkow, S. Hegyi, C. Höhne, K. Kadija, A. Karev, D. Kikola, M. Kliemant, S. Kniege, V. I. Kolesnikov, E. Kornas, M. Kowalski, I. Kraus, M. Kreps, A. Laszlo, R. Lacey, M. Van Leeuwen, P. Lévai, L. Litov, B. Lungwitz, M. Makariev, A. I. Malakhov, M. Mateev, G. L. Melkumov, C. Meurer, A. Mischke, M. Mitrovski, J. Molnár, St Mrówczyński, V. Nicolic, G. Pálla, A. D. Panagiotou, D. Panayotov, A. Petridis, W. Peryt, M. Pikna, J. Pluta, D. Prindle, F. Pühlhofer, R. Renfordt, A. Richard, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, T. Schuster, P. Seyboth, F. Siklér, B. Sitar, E. Skrzypczak, M. Slodkowski, G. Stefanek, R. Stock, C. Strabel, H. Ströbele, T. Susa, I. Szentpétery, J. Sziklai, M. Szuba, P. Szymanski, V. Trubnikov, M. Utvić, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranić, A. Wetzler, Z. Włodarczyk, A. Wojtaszek, I. K. Yoo, J. Zimányi
  • Goethe University Frankfurt
  • Ruder Boskovic Institute
  • Joint Institute for Nuclear Research
  • Wigner Research Centre for Physics
  • Institute of Nuclear Physics
  • CERN
  • Institute of Nuclear Chemistry and Technology, Warsaw
  • National Institute for Subatomic Physics
  • Comenius University
  • National and Kapodistrian University of Athens
  • Stony Brook University
  • Charles University
  • University of Washington
  • Max Planck Institute for Physics (Werner Heisenberg Institute)
  • GSI Helmholtz Centre for Heavy Ion Research
  • Jan Kochanowski University in Kielce
  • Bulgarian Academy of Sciences
  • Warsaw University of Technology
  • Sofia University St. Kliment Ohridski
  • University of Marburg
  • Massachusetts Institute of Technology
  • University of Warsaw
  • Pusan National University

Research output: Contribution to journalArticlepeer-review

156 Scopus citations

Abstract

Results on Λ,Λ̄,Ξ-, and Ξ̄+ production in central Pb+Pb reactions at 20A,30A,40A,80A, and 158A GeV are presented. The energy dependence of transverse mass spectra, rapidity spectra, and multiplicities is discussed. Comparisons to string hadronic models (UrQMD and HSD) and statistical hadron gas models are shown. Although the latter provide a reasonable description of all particle yields, the first class of models fails to match the Ξ- and Ξ̄+ multiplicities.

Original languageEnglish
Article number034918
JournalPhysical Review C - Nuclear Physics
Volume78
Issue number3
DOIs
StatePublished - Sep 29 2008

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