Observation of Anisotropic Event Shapes and Transverse Flow in Ultrarelativistic Au + Au Collisions

1994/05/13 by J. Barrette, R. Bellwied, S. Bennett +43 · 4 citations
Engineering · Physics and Astronomy · #High-Energy Particle Collisions Research #Nuclear reactor physics and engineering #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.1103/physrevlett.73.2532

published as Phys.Rev.Lett.73:2532-2535,1994 · 16 pages (incl. figs.), SUNY-RHI-94-08

arxiv created 1994/05/13 · openalex publication_date 1994/11/07 · arxiv updated 2011/08/19 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

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 (E_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 E_T is in a directed component. The signal decreases for peripheral and very central collisions.

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• Effects of HBT correlations on flow measurements
• Microscopic models for ultrarelativistic heavy ion collisions
• Novel Rapidity Dependence of Directed Flow in High-Energy Heavy-Ion Collisions
• Effects of nonuniform acceptance in anisotropic flow measurements