Azimuthal anisotropy: the higher harmonics
Arthur M Poskanzer; the STAR Collaboration; Arthur M Poskanzer; MS70R319, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA; the STAR Collaboration; MS70R319, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
Журнал:
Journal of Physics G: Nuclear and Particle Physics
Дата:
2004-08-01
Аннотация:
We report the first observation of the fourth harmonic (v<sub>4</sub>) in the azimuthal distribution of particles at RHIC. The measurement was done taking advantage of the large elliptic flow generated at RHIC. The integrated v<sub>4</sub> is about a factor of 10 smaller than v<sub>2</sub>. For the sixth (v<sub>6</sub>) and eighth (v<sub>8</sub>) harmonics upper limits on the magnitudes are reported.
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