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

FOPI Collaboration

    Research output: Contribution to journalArticle

    Abstract

    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.

    Original languageEnglish (US)
    Article number014901
    JournalPhysical Review C
    Volume94
    Issue number1
    DOIs
    StatePublished - Jul 5 2016

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    mesons
    collisions
    ionic collisions
    kinetic energy
    exponents
    spectrometers

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Centrality dependence of subthreshold φ meson production in Ni + Ni collisions at 1.9A GeV. / FOPI Collaboration.

    In: Physical Review C, Vol. 94, No. 1, 014901, 05.07.2016.

    Research output: Contribution to journalArticle

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    title = "Centrality dependence of subthreshold φ meson production in Ni + Ni collisions at 1.9A GeV",
    abstract = "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.",
    author = "{FOPI Collaboration} and K. Piasecki and Z. Tymiński and N. Herrmann and R. Averbeck and A. Andronic and V. Barret and Z. Basrak and N. Bastid and {Lotfi Benabderrhmane}, Mohamed and M. Berger and P. Buehler and M. Cargnelli and R. Čaplar and E. Cordier and P. Crochet and O. Czerwiakowa and I. Deppner and P. Dupieux and M. DŽelalija and L. Fabbietti and Z. Fodor and P. Gasik and I. Gašparić and Y. Grishkin and Hartmann, {O. N.} and Hildenbrand, {K. D.} and B. Hong and Kang, {T. I.} and J. Kecskemeti and Kim, {Y. J.} and M. Kirejczyk and M. Kiš and P. Koczon and M. Korolija and R. Kotte and A. Lebedev and Y. Leifels and {Le F{\`e}vre}, A. and Liu, {J. L.} and X. Lopez and A. Mangiarotti and V. Manko and J. Marton and T. Matulewicz and M. Merschmeyer and R. M{\"u}nzer and D. Pelte and M. Petrovici and F. Rami and A. Reischl",
    year = "2016",
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    TY - JOUR

    T1 - Centrality dependence of subthreshold φ meson production in Ni + Ni collisions at 1.9A GeV

    AU - FOPI Collaboration

    AU - Piasecki, K.

    AU - Tymiński, Z.

    AU - Herrmann, N.

    AU - Averbeck, R.

    AU - Andronic, A.

    AU - Barret, V.

    AU - Basrak, Z.

    AU - Bastid, N.

    AU - Lotfi Benabderrhmane, Mohamed

    AU - Berger, M.

    AU - Buehler, P.

    AU - Cargnelli, M.

    AU - Čaplar, R.

    AU - Cordier, E.

    AU - Crochet, P.

    AU - Czerwiakowa, O.

    AU - Deppner, I.

    AU - Dupieux, P.

    AU - DŽelalija, M.

    AU - Fabbietti, L.

    AU - Fodor, Z.

    AU - Gasik, P.

    AU - Gašparić, I.

    AU - Grishkin, Y.

    AU - Hartmann, O. N.

    AU - Hildenbrand, K. D.

    AU - Hong, B.

    AU - Kang, T. I.

    AU - Kecskemeti, J.

    AU - Kim, Y. J.

    AU - Kirejczyk, M.

    AU - Kiš, M.

    AU - Koczon, P.

    AU - Korolija, M.

    AU - Kotte, R.

    AU - Lebedev, A.

    AU - Leifels, Y.

    AU - Le Fèvre, A.

    AU - Liu, J. L.

    AU - Lopez, X.

    AU - Mangiarotti, A.

    AU - Manko, V.

    AU - Marton, J.

    AU - Matulewicz, T.

    AU - Merschmeyer, M.

    AU - Münzer, R.

    AU - Pelte, D.

    AU - Petrovici, M.

    AU - Rami, F.

    AU - Reischl, A.

    PY - 2016/7/5

    Y1 - 2016/7/5

    N2 - 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.

    AB - 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.

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    U2 - 10.1103/PhysRevC.94.014901

    DO - 10.1103/PhysRevC.94.014901

    M3 - Article

    VL - 94

    JO - Physical Review C

    JF - Physical Review C

    SN - 2469-9985

    IS - 1

    M1 - 014901

    ER -