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Scaling of anisotropic flow in the picture of quark coalescence

Markus D Oldenburg (for the STAR Collaboration)

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Measurements of anisotropic flow at low (pT < 1.5 GeV/c) and intermediate (1.5 < pT < 5 GeV/c) transverse momentum from the STAR collaboration are reviewed. While at low pT an ordering of elliptic flow strength with particle mass is observed, the measured signals appear to follow number-of-constituent quark scaling at intermediate pT. The observations of higher harmonics support this picture qualitatively, and are sensitive to specific model assumptions.


PACS

25.75.Ld Collective flow

27.80.+w 190(less-than-or-equal-to)A(less-than-or-equal-to)219

24.10.Nz Hydrodynamic models

Subjects

Nuclear physics

Dates

Issue 4 (April 2005)

Received 30 December 2004

Published 17 March 2005



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