Azimuthal anisotropy and correlations in the hard scattering regime at RHIC

STAR Collaboration

doi:10.1103/PhysRevLett.90.032301

Azimuthal anisotropy and correlations in the hard scattering regime at RHIC

Nuclear Experiment 2012-08-27 v2

Authors: STAR Collaboration

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Abstract

Azimuthal anisotropy ( $v_2$ ) and two-particle angular correlations of high $p_T$ charged hadrons have been measured in Au+Au collisions at $\sqrt{s_{NN}}$ =130 GeV for transverse momenta up to 6 GeV/c, where hard processes are expected to contribute significantly. The two-particle angular correlations exhibit elliptic flow and a structure suggestive of fragmentation of high $p_T$ partons. The monotonic rise of $v_2(p_T)$ for $p_T<2$ GeV/c is consistent with collective hydrodynamical flow calculations. At $\pT>3$ GeV/c a saturation of $v_2$ is observed which persists up to $p_T=6$ GeV/c.

Keywords

azimuthal anisotropy elliptic flow hard scattering high pT hadrons Au+Au collisions RHIC

Cite

@article{arxiv.nucl-ex/0206006,
  title  = {Azimuthal anisotropy and correlations in the hard scattering regime at RHIC},
  author = {STAR Collaboration},
  journal= {arXiv preprint arXiv:nucl-ex/0206006},
  year   = {2012}
}

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