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

Event shapes for Au + Au collisions at 11.4 GeV/[ital 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 ([ital E][sub [ital T]]) measured in different pseudorapidit...

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Bibliographic Details
Published in:Physical review letters 1994-11, Vol.73 (19), p.2532-2535
Main Authors: Barrette, J, Bellwied, R, Bennett, S, Braun-Munzinger, P, Cleland, WE, Clemen, M, Cole, J, Cormier, TM, David, G, Dee, J, Dietzsch, O, Drigert, M, Gilbert, S, Hall, JR, Hemmick, TK, Herrmann, N, Hong, B, Jiang, CL, Kwon, Y, Lacasse, R, Lukaszew, A, Li, Q, Ludlam, TW, McCorkle, S, Mark, SK, Matheus, R, O'Brien, E, Panitkin, S, Piazza, T, Pruneau, C, Rao, MN, Rosati, M, daSilva, NC, Sedykh, S, Sonnadara, U, Stachel, J, Takai, H, Takagui, EM, Voloshin, S, Wang, G, Wessels, JP, Woody, CL, Xu, N, Zhang, Y, Zhang, Z, Zou, C
Format: Article
Language:English
Subjects:
663450 - Heavy-Ion-Induced Reactions & Scattering- (1992-)
ANISOTROPY
CHARGED-PARTICLE REACTIONS
ENERGY
ENERGY RANGE
FOURIER ANALYSIS
GOLD 197 REACTIONS
GOLD 197 TARGET
HEAVY ION REACTIONS
KINETIC ENERGY
NUCLEAR PHYSICS AND RADIATION PHYSICS
NUCLEAR REACTIONS
RELATIVISTIC RANGE
TARGETS
TRANSVERSE ENERGY
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Summary:Event shapes for Au + Au collisions at 11.4 GeV/[ital 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 ([ital E][sub [ital T]]) 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 [ital E][sub [ital T]] is in a directed component. The signal decreases for peripheral and very central collisions.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.73.2532