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

FOPI Collaboration

Research output: Contribution to journalArticle

4 Citations (Scopus)

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
Article number014901
JournalPhysical Review C - Nuclear Physics
Volume94
Issue number1
DOIs
Publication statusPublished - 2016 Jul 5

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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 - Nuclear Physics, 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 Benabderrahmane, {M. L.} 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 Byungsik 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",
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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 - Benabderrahmane, M. L.

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, Byungsik

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 - Nuclear Physics

JF - Physical Review C - Nuclear Physics

SN - 0556-2813

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