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Strange meson production in Al+Al collisions at 1.9A GeV

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The production of K$^+$, K$^-$ and $\varphi$(1020) mesons is studied in Al+Al collisions at a beam energy of 1.9A GeV which is close or below the production threshold in NN reactions. Inverse slopes, anisotropy parameters, and total emission yields of K$^{\pm}$ mesons are obtained. A comparison of t...

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Main Authors: Gasik, Piotr (Author) , Piasecki, Krzysztof (Author) , Herrmann, Norbert (Author) , Benabderrahmane, Mohamed Lotfi (Author) , Deppner, Ingo Martin (Author) , Reischl, Alexander Antonius (Author) , Tyminski, Z. (Author) , Wisniewski, Krzysztof (Author) , Zhang, Y. (Author) , Zinyuk, Victoria (Author)
Format: Article (Journal)
Language:English
Published: 28 June 2016
In: The European physical journal. A, Hadrons and nuclei
Year: 2016, Volume: 52, Issue: 6
ISSN:1434-601X
DOI:10.1140/epja/i2016-16177-y
Online Access:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1140/epja/i2016-16177-y
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Author Notes:P. Gasik, K. Piasecki, N. Herrmann, Y. Leifels, T. Matulewicz, A. Andronic, R. Averbeck, V. Barret, Z. Basrak, N. Bastid, M.L. Benabderrahmane, M. Berger, P. Buehler, M. Cargnelli, R. Čaplar, P. Crochet, O. Czerwiakowa, I. Deppner, P. Dupieux, M. Dželalija, L. Fabbietti, Z. Fodor, I. Gašparić, Y. Grishkin, O.N. Hartmann, K. D. Hildenbrand, B. Hong, T.I. Kang, 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, R. Münzer, M. Petrovici, 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. Tymiński, P. Wagner, I. Weber, E. Widmann, K. Wiśniewski, Z.G. Xiao, I. Yushmanov, Y. Zhang, A. Zhilin, V. Zinyuk, and J. Zmeskal
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Summary:The production of K$^+$, K$^-$ and $\varphi$(1020) mesons is studied in Al+Al collisions at a beam energy of 1.9A GeV which is close or below the production threshold in NN reactions. Inverse slopes, anisotropy parameters, and total emission yields of K$^{\pm}$ mesons are obtained. A comparison of the ratio of kinetic energy distributions of K$^-$ and K$^+$ mesons to the HSD transport model calculations suggests that the inclusion of the in-medium modifications of kaon properties is necessary to reproduce the ratio. The inverse slope and total yield of $\phi$ mesons are deduced. The contribution to K$^-$ production from $\phi$ meson decays is found to be [17 $\pm$ 3 (stat) $^{+2}_{-7}$ (syst)] %. The results are in line with previous K$^{\pm}$ and $\phi$ data obtained for different colliding systems at similar incident beam energies.
Item Description:Gesehen am 13.05.2020
Physical Description:Online Resource
ISSN:1434-601X
DOI:10.1140/epja/i2016-16177-y

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