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Azimuthal emission patterns of K+ and of K-mesons in Ni+Ni collisions near the strangeness production threshold

  • V. Zinyuk
  • , T. I. Kang
  • , Y. Leifels
  • , N. Herrmann
  • , B. Hong
  • , R. Averbeck
  • , A. Andronic
  • , V. Barret
  • , Z. Basrak
  • , N. Bastid
  • , M. L. Benabderrahmane
  • , M. Berger
  • , P. Buehler
  • , M. Cargnelli
  • , R. Čaplar
  • , I. Carevic
  • , P. Crochet
  • , I. Deppner
  • , P. Dupieux
  • , M. DŽelalija
  • L. Fabbietti, Z. Fodor, P. Gasik, I. Gašparić, Y. Grishkin, O. N. Hartmann, K. D. Hildenbrand, J. Kecskemeti, Y. J. Kim, M. Kirejczyk, M. Kiš, P. Koczon, R. Kotte, A. Lebedev, A. Le Fèvre, J. L. Liu, X. Lopez, V. Manko, J. Marton, T. Matulewicz, R. Münzer, M. Petrovici, K. Piasecki, F. Rami, A. Reischl, W. Reisdorf, M. S. Ryu, P. Schmidt, A. Schüttauf, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, K. Suzuki, Z. Tyminski, P. Wagner, E. Widmann, K. Wiśniewski, Z. G. Xiao, I. Yushmanov, Y. Zhang, A. Zhilin, J. Zmeskal, E. Bratkovskaya, C. Hartnack
  • Heidelberg University
  • GSI Helmholtz Center
  • Korea University
  • Université Blaise Pascal
  • Rudjer Boskovic Institute
  • Cluster of Excellence E-conversion
  • Technical University of Munich
  • Stefan Meyer Institut für Subatomare Physik (SMI)
  • University of Split
  • Wigner Research Centre for Physics
  • University of Warsaw
  • ITEP
  • HelmholtzZentrum Dresden-Rossendorf
  • Harbin Institute of Technology
  • National Research Centre "Kurchatov Institute"
  • Horia Hulubei National Institute of Physics and Nuclear Engineering
  • Universite de Strasbourg
  • Tsinghua University
  • Institute of Modern Physics Chinese Academy of Sciences
  • Frankfurt Institute for Advanced Studies
  • Johann Wolfgang Goethe University
  • SUBATECH, CNRS/IN2P3, Ecole des Mines de Nantes

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Azimuthal emission patterns of K± mesons have been measured in Ni + Ni collisions with the FOPI spectrometer at a beam kinetic energy of 1.91 A GeV. The transverse momentum pT integrated directed and elliptic flow of K+ and K- mesons as well as the centrality dependence of pT - differential directed flow of K+ mesons are compared to the predictions of hadron string dynamics and isospin quantum molecular dynamics transport models. The data exhibits different propagation patterns of K+ and K- mesons in the compressed and heated nuclear medium and favor the existence of a kaon-nucleon in-medium potential, repulsive for K+ mesons and attractive for K- mesons.

Original languageEnglish
Article number025210
JournalPhysical Review C - Nuclear Physics
Volume90
Issue number2
DOIs
StatePublished - 25 Aug 2014

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