Observation of anisotropic event shapes and transverse flow in ultrarelativistic Au + Au collisions

J. Barrette, R. Bellwied, S. Bennett, P. Braun-Munzinger, W. E. Cleland, M. Clemen, J. Cole, T. M. Cormier, G. David, J. Dee, O. Dietzsch, M. Drigert, S. Gilbert, J. R. Hall, T. K. Hemmick, N. Herrmann, B. Hong, C. L. Jiang, Y. Kwon, R. LacasseA. Lukaszew, Q. Li, T. W. Ludlam, S. McCorkle, S. K. Mark, R. Matheus, E. O'Brien, S. Panitkin, T. Piazza, C. Pruneau, M. N. Rao, M. Rosati, N. C. DaSilva, S. Sedykh, U. Sonnadara, J. Stachel, H. Takai, E. M. Takagui, S. Voloshin, G. Wang, J. P. Wessels, C. L. Woody, N. Xu, Z. Zhang, Y. Zhang, C. Zou

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Abstract

Event shapes for Au + Au collisions at 11.4 GeV/c per nucleon were studied over nearly the full solid angle with the E877 apparatus. The analysis was performed by Fourier expansion of azimuthal distributions of the transverse energy (ET) measured in different pseudorapidity intervals. For semicentral collisions a pronounced event anisotropy is identified with a clear forward-backward anticorrelation. In the forward pseudorapidity interval up to 9% of the ET is in a directed component. The signal decreases for peripheral and very central collisions.

Original languageEnglish
Pages (from-to)2532-2535
Number of pages4
JournalPhysical review letters
Volume73
Issue number19
DOIs
Publication statusPublished - 1994

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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    Barrette, J., Bellwied, R., Bennett, S., Braun-Munzinger, P., Cleland, W. E., Clemen, M., Cole, J., Cormier, T. M., David, G., Dee, J., Dietzsch, O., Drigert, M., Gilbert, S., Hall, J. R., Hemmick, T. K., Herrmann, N., Hong, B., Jiang, C. L., Kwon, Y., ... Zou, C. (1994). Observation of anisotropic event shapes and transverse flow in ultrarelativistic Au + Au collisions. Physical review letters, 73(19), 2532-2535. https://doi.org/10.1103/PhysRevLett.73.2532