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

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...

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Main Authors: Zinyuk, Victoria (Author) , Kang, T. I. (Author) , Leifels, Y. (Author) , Herrmann, Norbert (Author) , Hong, B. (Author) , Averbeck, R. (Author) , Andronic, A. (Author) , Barret, V. (Author) , Basrak, Z. (Author) , Bastid, N. (Author) , Benabderrahmane, M. L. (Author) , Berger, M. (Author) , Buehler, P. (Author) , Cargnelli, M. (Author) , Čaplar, R. (Author) , Carevic, I. (Author) , Crochet, P. (Author) , Deppner, Ingo Martin (Author) , Reischl, Andreas (Author)
Format: Article (Journal)
Language:English
Published: 25 August 2014
In: Physical review. C, Nuclear physics
Year: 2014, Volume: 90, Issue: 2
ISSN:1089-490X
DOI:10.1103/PhysRevC.90.025210
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevC.90.025210
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.90.025210
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Author Notes: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, and J. Zmeskal (FOPI Collaboration), E. Bratkovskaya and C. Hartnack
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Summary: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.
Item Description:Im Titel sind + und - hochgestellt
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Physical Description:Online Resource
ISSN:1089-490X
DOI:10.1103/PhysRevC.90.025210

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