@article{d9d6bd350d5741c19e3fb4b202c299ad,
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. Tymi{\'n}ski 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. {\v C}aplar and E. Cordier and P. Crochet and O. Czerwiakowa and I. Deppner and P. Dupieux and M. D{\v Z}elalija and L. Fabbietti and Z. Fodor and P. Gasik and I. Ga{\v s}pari{\'c} 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. Ki{\v s} 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",
note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",
year = "2016",
month = jul,
day = "5",
doi = "10.1103/PhysRevC.94.014901",
language = "English",
volume = "94",
journal = "Physical Review C",
issn = "2469-9985",
publisher = "American Physical Society",
number = "1",
}