Azimuthal anisotropy in S + Au reactions at 200 a GeV

M. M. Aggarwal, A. L.S. Angelis, V. Antonenko, T. C. Awes, S. K. Badyal, C. Barlag, K. B. Bhalla, V. S. Bhatia, C. Blume, D. Bock, E. M. Bohne, D. Bucher, A. Buijs, S. Chattopadhyay, A. Claussen, G. Clewing, A. C. Das, Devanand, P. Dönni, E. DurieuxM. R. Dutta Majumdar, P. Foka, S. Fokin, M. S. Ganti, S. Garpman, F. Geurts, T. K. Ghosh, R. Glasow, S. K. Gupta, H. Å Gustafsson, H. H. Gutbrod, M. Hartig, Xiaochun He, G. Hölker, M. Ippolitov, M. Izycki, S. Kachroo, H. Kalechofsky, R. Kamermans, K. H. Kampert, K. Karadjev, B. W. Kolb, I. Langbein, J. Langheinrich, A. Lebedev, H. Löhner, S. Loknathan, V. Manko, M. Martin, I. S. Mittra, S. Mookerjee, H. Naef, S. K. Nayak, T. K. Nayak, S. Nikolaev, J. Nystrand, F. E. Obenshain, A. Oskarsson, I. Otterlund, T. Peitzmann, F. Plasil, M. Purschke, S. Raniwala, N. K. Rao, L. Rosselet, B. Roters, J. M. Rubio, S. Saini, S. Sambyal, R. Santo, H. R. Schmidt, T. Siemiarczuk, R. H. Siemssen, B. C. Sinha, S. Slegt, K. Söderström, N. Solomey, S. P. Sorensen, G. Stefanek, P. Steinhaeuser, E. Stenlund, A. Ster, D. Stüken, M. D. Trivedi, C. Twenhoefel, N. Van Eijndhoven, W. H. Van Heeringen, A. Vinogradov, Y. P. Viyogi, S. Weber, G. R. Young

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36 Citations (Scopus)


Azimuthal correlations of photons produced at mid-rapidity in 200 A GeV S + Au collisions have been studied using a preshower photon multiplicity detector in the WA93 experiment. The Fourier expansion method has been employed to estimate the event plane via the anisotropy of the event as a function of centrality. The event plane correlation technique has been used to determine the true event anisotropy, beyond the anisotropy which arises due to finite multiplicity. The VENUS event generator with rescattering and proper simulation of the detector response can explain only a portion of the observed anisotropy. The residual anisotropy is found to be of the order of 5% for semi-central collisions. This suggests that directed collective flow of the produced particles is present at SPS energies.

Original languageEnglish
Pages (from-to)390-396
Number of pages7
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Issue number3-4
Publication statusPublished - Jun 26 1997

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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    Aggarwal, M. M., Angelis, A. L. S., Antonenko, V., Awes, T. C., Badyal, S. K., Barlag, C., Bhalla, K. B., Bhatia, V. S., Blume, C., Bock, D., Bohne, E. M., Bucher, D., Buijs, A., Chattopadhyay, S., Claussen, A., Clewing, G., Das, A. C., Devanand, Dönni, P., ... Young, G. R. (1997). Azimuthal anisotropy in S + Au reactions at 200 a GeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 403(3-4), 390-396.