Azimuthal Dependence of Collective Expansion for Symmetric Heavy-Ion Collisions

G. Stoicea, M. Petrovici, A. Andronic, N. Herrmann, J. P. Alard, Z. Basrak, V. Barret, N. Bastid, R. Čaplar, P. Crochet, P. Dupieux, M. Dželalija, Z. Fodor, O. Hartmann, K. D. Hildenbrand, B. Hong, J. Kecskemeti, Y. J. Kim, M. Kirejczyk, M. KorolijaR. Kotte, T. Kress, A. Lebedev, Y. Leifels, X. Lopez, M. Merschmeier, W. Neubert, D. Pelte, F. Rami, W. Reisdorf, D. Schüll, Z. Seres, B. Sikora, K. S. Sim, V. Simion, K. Siwek-Wilczyńska, V. Smolyankin, M. Stockmeier, K. Wiśniewski, D. Wohlfarth, I. Yushmanov, A. Zhilin, P. Danielewicz

Research output: Article

34 Citations (Scopus)


Detailed studies of the azimuthal dependence of the mean fragment and flow energies in the [Formula presented] and [Formula presented] systems are reported as a function of incident energy and centrality. Comparisons between data and model calculations show that the flow energy values along different azimuthal directions could be viewed as snapshots of the fireball expansion with different exposure times. For the same number of participating nucleons more transversally elongated participant shapes from the heavier system produce less collective transverse energy. Good agreement with Boltzmann-Uehling-Uhlenbeck calculations is obtained for a soft nuclear equation of state.

Original languageEnglish
JournalPhysical review letters
Issue number7
Publication statusPublished - 2004

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Stoicea, G., Petrovici, M., Andronic, A., Herrmann, N., Alard, J. P., Basrak, Z., Barret, V., Bastid, N., Čaplar, R., Crochet, P., Dupieux, P., Dželalija, M., Fodor, Z., Hartmann, O., Hildenbrand, K. D., Hong, B., Kecskemeti, J., Kim, Y. J., Kirejczyk, M., ... Danielewicz, P. (2004). Azimuthal Dependence of Collective Expansion for Symmetric Heavy-Ion Collisions. Physical review letters, 92(7).