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Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics

Adams, J; Adler, C; Aggarwal, MM; Ahammed, Z; Amonett, J; Anderson, BD; Anderson, M; ... STAR Collaboration, .; + view all (2004) Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics. PHYS REV LETT , 92 (6) , Article 062301. 10.1103/PhysRevLett.92.062301. Green open access

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Abstract

We report the first observations of the first harmonic (directed flow, v(1)) and the fourth harmonic (v(4)), in the azimuthal distribution of particles with respect to the reaction plane in Au+Au collisions at the BNL Relativistic Heavy Ion Collider (RHIC). Both measurements were done taking advantage of the large elliptic flow (v(2)) generated at RHIC. From the correlation of v(2) with v(1) it is determined that v(2) is positive, or in-plane. The integrated v(4) is about a factor of 10 smaller than v(2). For the sixth (v(6)) and eighth (v(8)) harmonics upper limits on the magnitudes are reported.

Type: Article
Title: Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.92.062301
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.92.062301
Language: English
Additional information: © 2004 The American Physical Society
Keywords: TIME PROJECTION CHAMBER, NUCLEAR COLLISIONS, COLLECTIVE FLOW, STAR, ENERGIES
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
URI: https://discovery.ucl.ac.uk/id/eprint/1324894
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