Directed and elliptic flow of charged particles in Cu+Cu collisions at sNN=\sqrt{s_{NN}} = 22.4 GeV

Collaboration
Sep, 2011
10 pages
Published in:
  • Phys.Rev.C 85 (2012) 014901
e-Print:
Experiments:

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Abstract: (arXiv)
This paper reports results for directed flow v1v_{1} and elliptic flow v2v_{2} of charged particles in Cu+Cu collisions at sNN=\sqrt{s_{NN}}= 22.4 GeV at the Relativistic Heavy Ion Collider. The measurements are for the 0-60% most central collisions, using charged particles observed in the STAR detector. Our measurements extend to 22.4 GeV Cu+Cu collisions the prior observation that v1v_1 is independent of the system size at 62.4 and 200 GeV, and also extend the scaling of v1v_1 with η/ybeam\eta/y_{\rm beam} to this system. The measured v2(pT)v_2(p_T) in Cu+Cu collisions is similar for sNN=22.4200\sqrt{s_{NN}} = 22.4-200 GeV. We also report a comparison with results from transport model (UrQMD and AMPT) calculations. The model results do not agree quantitatively with the measured v1(η),v2(pT)v_1(\eta), v_2(p_T) and v2(η)v_2(\eta).
Note:
  • 10 pages,9 figures: Introduction part of the paper is expanded, Fig 9 is changed slightly, more discussion on summary
  • 25.75.Dw
  • 25.75.Ld
  • charged particle: elliptic flow
  • heavy ion: scattering
  • copper
  • impact parameter: dependence
  • transport theory
  • STAR
  • charged particle: particle flow
  • rapidity dependence
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