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

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    0101883 - UJF-V 20043071 RIV US eng J - Journal Article
    Adams, J. - Chaloupka, Petr - Filip, P. - Lednický, R. - Šumbera, Michal - Zborovský, Imrich
    Azimuthal anisotropy at the relativistic heavy ion collider: The first and fourth harmonics.
    [Azimutální anizotropie na RHIC: první a čtvrté harmoniky.]
    Physical Review Letters. Roč. 92, č. 6 (2004), 062301. ISSN 0031-9007. E-ISSN 1079-7114
    R&D Projects: GA ČR GA202/04/0793
    Institutional research plan: CEZ:AV0Z1048901
    Keywords : time projection chamber * nuclear collisions * collective flow
    Subject RIV: BF - Elementary Particles and High Energy Physics
    Impact factor: 7.218, year: 2004

    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.

    První pozorování první harmoniky (směrového toku V1) a čtvrté harmoniky (V4) v azimutálním rozdělení částic vzhledem k reakční rovině ve srážkách Au+Au v BNL RHIC.

    Permanent Link: http://hdl.handle.net/11104/0009268

     
     
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