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Proton-Λ correlations in central Pb+Pb collisions at √s NN=17.3 GeV

  • T. Anticic
  • , B. Baatar
  • , D. Barna
  • , J. Bartke
  • , H. Beck
  • , L. Betev
  • , H. Białkowska
  • , C. Blume
  • , M. Bogusz
  • , B. Boimska
  • , J. Book
  • , M. Botje
  • , P. Bunčić
  • , T. Cetner
  • , P. Christakoglou
  • , P. Chung
  • , O. Chvála
  • , J. G. Cramer
  • , V. Eckardt
  • , Z. Fodor
  • P. Foka, V. Friese, M. Gaździcki, K. Grebieszkow, C. Höhne, K. Kadija, A. Karev, V. I. Kolesnikov, M. Kowalski, D. Kresan, A. László, R. Lacey, M. Van Leeuwen, M. MaćKowiak, M. Makariev, A. I. Malakhov, M. Mateev, G. L. Melkumov, M. Mitrovski, St Mrówczyński, V. Nicolic, G. Pálla, A. D. Panagiotou, W. Peryt, J. Pluta, D. Prindle, F. Pühlhofer, R. Renfordt, C. Roland, G. Roland, M. Rybczyński, A. Rybicki, A. Sandoval, N. Schmitz, T. Schuster, P. Seyboth, F. Siklér, E. Skrzypczak, M. Słodkowski, G. Stefanek, R. Stock, H. Ströbele, T. Susa, M. Szuba, M. Utvić, D. Varga, M. Vassiliou, G. I. Veres, G. Vesztergombi, D. Vranić, Z. Włodarczyk, A. Wojtaszek-Szwarc
  • Ruder Boskovic Institute
  • Joint Institute for Nuclear Research
  • Wigner Research Centre for Physics
  • Institute of Nuclear Physics
  • Goethe University Frankfurt
  • CERN
  • Institute of Nuclear Chemistry and Technology, Warsaw
  • Warsaw University of Technology
  • National Institute for Subatomic Physics
  • 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
  • Sofia University St. Kliment Ohridski
  • National and Kapodistrian University of Athens
  • University of Marburg
  • Massachusetts Institute of Technology
  • University of Warsaw
  • Eötvös Loránd University

Research output: Contribution to journalArticlepeer-review

10 Scopus citations

Abstract

The momentum correlation between protons and Λ particles emitted from central Pb+Pb collisions at √sNN=17.3 GeV was studied by the NA49 experiment at the CERN Super Proton Synchrotron. A clear enhancement is observed for small relative momenta (qinv<0.2 GeV). By fitting a theoretical model, which uses the strong interaction between the proton and the Λ in a given pair, to the measured data, a value for the effective source size is deduced. Assuming a static Gaussian source distribution, we derive an effective radius parameter of RG=3.02±0.20(stat.)-0.16+0. 44(syst.) fm.

Original languageEnglish
Article number054906
JournalPhysical Review C - Nuclear Physics
Volume83
Issue number5
DOIs
StatePublished - May 16 2011

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