تقرير
Centrality dependence of subthreshold $\phi$ meson production in Ni+Ni collisions at 1.9A GeV
| العنوان: | Centrality dependence of subthreshold $\phi$ meson production in Ni+Ni collisions at 1.9A GeV |
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| المؤلفون: | Piasecki, K., Tymiński, Z., Herrmann, N., Averbeck, R., Andronic, A., Barret, V., Basrak, Z., Bastid, N., Benabderrahmane, M. L., Berger, M., Buehler, P., Cargnelli, M., Čaplar, R., Cordier, E., Crochet, P., Czerwiakowa, O., Deppner, I., Dupieux, P., Dželalija, M., Fabbietti, L., Fodor, Z., Gasik, P., Gašparić, I., Grishkin, Y., Hartmann, O. N., Hildenbrand, K. D., Hong, B., Kang, T. I., Kecskemeti, J., Kim, Y. J., Kirejczyk, M., Kiš, M., Koczon, P., Korolija, M., Kotte, R., Lebedev, A., Leifels, Y., Fèvre, A. Le, Liu, J. L., Lopez, X., Mangiarotti, A., Manko, V., Marton, J., Matulewicz, T., Merschmeyer, M., Münzer, R., Pelte, D., Petrovici, M., Rami, F., Reischl, A., Reisdorf, W., Ryu, M. S., Schmidt, P., Schüttauf, A., Seres, Z., Sikora, B., Sim, K. S., Simion, V., Siwek-Wilczyńska, K., Smolyankin, V., Stoicea, G., Suzuki, K., Wagner, P., Weber, I., Widmann, E., Wiśniewski, K., Xiao, Z. G., Xu, H. S., Yushmanov, I., Zhang, Y., Zhilin, A., Zinyuk, V., Zmeskal, J. |
| المصدر: | Phys. Rev. C 94, 014901 (2016) |
| سنة النشر: | 2016 |
| المجموعة: | Nuclear Experiment |
| مصطلحات موضوعية: | Nuclear Experiment |
| الوصف: | We analysed the $\phi$ meson production in central Ni+Ni collisions at the beam kinetic energy of 1.93A GeV with the FOPI spectrometer and found the production probability per event of $[8.6 ~\pm~ 1.6 ~(\text{stat}) \pm 1.5 ~(\text{syst})] \times 10^{-4}$. This new data point allows for the first time to inspect the centrality dependence of the subthreshold $\phi$ meson production in heavy-ion collisions. The rise of $\phi$ meson multiplicity per event with mean number of participants can be parameterized by the power function with exponent $\alpha = 1.8 \pm 0.6$. The ratio of $\phi$ to $\text{K}^-$ production yields seems not to depend within the experimental uncertainties on the collision centrality, and the average of measured values was found to be $0.36 \pm 0.05$. Comment: 9 pages, 5 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevC.94.014901 |
| URL الوصول: | http://arxiv.org/abs/1602.04378 |
| رقم الأكسشن: | edsarx.1602.04378 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevC.94.014901 |
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