System size and beam energy dependence of azimuthal anisotropy from PHENIX

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Abstract

We present azimuthal anisotropy measurements in Au+Au and Cu+Cu collisions at and 200 GeV. Comparison between reaction plane and cumulant v2 measurements in Au+Au collisions at GeV shows that non-flow contributions, originating mainly from jets, influence the extracted v2 for pT 3.5 GeV/c. Number of constituent quark (NCQ) scaling of v2, when studied as a function of transverse kinetic energy KET, is seen to hold for Au+Au collisions at and 200 GeV and for Cu+Cu collisions at GeV for KET 1 GeV. Differential hexadecupole flow v4 seems to exhibit scaling with integral v2 for centrality ≤40% as has been observed for differential v2.

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Ämnesklassifikation (UKÄ) – OBLIGATORISK

  • Subatomär fysik
Originalspråkengelska
Artikelnummer104103
TidskriftJournal of Physics G: Nuclear and Particle Physics
Volym35
StatusPublished - 2008
PublikationskategoriForskning
Peer review utfördJa