Azimuthal anisotropy and correlations in the hard scattering regime at RHIC

Collaboration
Jun, 2002
6 pages
Published in:
  • Phys.Rev.Lett. 90 (2003) 032301
e-Print:
Report number:
  • LBNL-50518
Experiments:

Citations per year

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Abstract:
Azimuthal anisotropy (v2v_2) and two-particle angular correlations of high pTp_T charged hadrons have been measured in Au+Au collisions at sNN\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 pTp_T partons. The monotonic rise of v2(pT)v_2(p_T) for pT<2p_T<2 GeV/c is consistent with collective hydrodynamical flow calculations. At \pT>3 GeV/c a saturation of v2v_2 is observed which persists up to pT=6p_T=6 GeV/c.
Note:
  • As published Report-no: LBNL-50518 Journal-ref: Phys. Rev. Lett. 90, 032301 (2003)
  • scattering: heavy ion
  • gold
  • charged particle: multiple production
  • transverse momentum: high
  • angular correlation: two-particle
  • angular distribution: anisotropy
  • particle flow
  • transverse momentum dependence
  • parton: fragmentation
  • hydrodynamics