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Centrality dependence of subthreshold ϕ meson production in Ni + Ni collisions at 1.9A GeV

We analyzed the ϕ meson production in central Ni + Ni collisions at a beam kinetic energy of 1.93A GeV with the FOPI spectrometer and found a production probability per event of [8.6±1.6(stat)±1.5(syst)]×10−4. This new data point allows us for the first time to inspect the centrality dependence of s...

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Hauptverfasser: Piasecki, Krzysztof (VerfasserIn) , Herrmann, Norbert (VerfasserIn) , Deppner, Ingo Martin (VerfasserIn) , Liu, Jian-Li (VerfasserIn) , Merschmeyer, Markus (VerfasserIn) , Pelte, Dietrich (VerfasserIn) , Reischl, Andreas (VerfasserIn) , Wisniewski, Krzysztof (VerfasserIn) , Zinyuk, Victoria (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 5 July 2016
In: Physical review
Year: 2016, Jahrgang: 94, Heft: 1
ISSN:2469-9993
DOI:10.1103/PhysRevC.94.014901
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1103/PhysRevC.94.014901
Verlag, lizenzpflichtig, Volltext: https://link.aps.org/doi/10.1103/PhysRevC.94.014901
Volltext
Verfasserangaben:K. Piasecki, Z. Tymiński, N. Herrmann, R. Averbeck, A. Andronic, V. Barret, Z. Basrak, N. Bastid, M.L. Benabderrahmane, M. Berger, P. Buehler, M. Cargnelli, R. Čaplar, E. Cordier, P. Crochet, O. Czerwiakowa, I. Deppner, P. Dupieux, M. Dželalija, L. Fabbietti, Z. Fodor, P. Gasik, 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, M. Korolija, R. Kotte, A. Lebedev, Y. Leifels, A. Le Fèvre, J.L. Liu, X. Lopez, A. Mangiarotti, V. Manko, J. Marton, T. Matulewicz, M. Merschmeyer, R. Münzer, D. Pelte, 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, G. Stoicea, K. Suzuki, P. Wagner, I. Weber, E. Widmann, K. Wiśniewski, Z.G. Xiao, H.S. Xu, I. Yushmanov, Y. Zhang, A. Zhilin, V. Zinyuk and J. Zmeskal (FOPI Collaboration)
Beschreibung
Zusammenfassung:We analyzed the ϕ meson production in central Ni + Ni collisions at a beam kinetic energy of 1.93A GeV with the FOPI spectrometer and found a production probability per event of [8.6±1.6(stat)±1.5(syst)]×10−4. This new data point allows us for the first time to inspect the centrality dependence of subthreshold ϕ meson production in heavy-ion collisions. The rise of ϕ meson multiplicity per event with mean number of participants can be parametrized by a power function with exponent α=1.8±0.6. The ratio of ϕ to K− production yields seems not to depend, within the experimental uncertainties, on the collision centrality, and the average of measured values was found to be 0.36±0.05.
Beschreibung:Published 5 July 2016
Gesehen am 20.10.2020
Beschreibung:Online Resource
ISSN:2469-9993
DOI:10.1103/PhysRevC.94.014901

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