Differential Elliptic Flow at Forward Rapidity in 200GeV AuAu Collisions

  • Identified particle elliptic flow results are presented for the Au+Au reaction at sNN=200GeV as a function of transverse momentum and pseudorapidity. Data at pseudorapidities η≈0,1, and 3.4 were obtained using the two BRAHMS spectrometers. Differential v2 (η,pt) values for a given particle type are found to be essentially constant over the covered pseudorapidity range, in contrast to the integral v2 values which have previously been observed to decrease at forward rapidities. A softening of the particle spectra at forward angles is found to account for at least part of the integral v2 falloff. The data are found to be consistent with existing constituent quark scaling systematics.
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  • [1] . Shuryak E. Prog. Part. Nucl. Phys., 2004, 53: 2732. Adams J et al. (STAR Collaboration). Phys. Rev., 2005,C72: 0149043. Adler S S et al. (PHENIX Collaboration). Phys. Rev. Lett.,2003, 91: 1823014. Back B B et al. (PHOBOS Collaboration). Phys. Rev.Lett., 2005, 94: 1223035. Adamczyk M et al. (BRAHMS Collaboration). Nucl. Instrum. Methods, 2003, A499: 4376. Poskanzer A M, Voloshin S A. Phys. Rev., 1998, C58: 16717. Hirano T, Heinz U W, Kharzeev D et al. Phys. Lett., 2006,B636: 2998. CHEN L W, Greco V, Ko C M et al. Phys. Lett., 2005,B605: 959. Lacey R A, Taranenko A. In Proceedings of International Workshop on Correlations and Fluctuations in Relativistic Nuclear Collisions. Florence, Italy, 7-9 Jul 2006. arXiv:nuclex/0610029
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S.J.Sanders. Differential Elliptic Flow at Forward Rapidity in 200GeV AuAu Collisions[J]. Chinese Physics C, 2007, 31(12): 1137-1140.
S.J.Sanders. Differential Elliptic Flow at Forward Rapidity in 200GeV AuAu Collisions[J]. Chinese Physics C, 2007, 31(12): 1137-1140. shu
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Received: 2007-07-17
Revised: 1900-01-01
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Differential Elliptic Flow at Forward Rapidity in 200GeV AuAu Collisions

    Corresponding author: S.J.Sanders,
  • The University of Kansas, Lawrence, Kansas 66045, USA

Abstract: Identified particle elliptic flow results are presented for the Au+Au reaction at sNN=200GeV as a function of transverse momentum and pseudorapidity. Data at pseudorapidities η≈0,1, and 3.4 were obtained using the two BRAHMS spectrometers. Differential v2 (η,pt) values for a given particle type are found to be essentially constant over the covered pseudorapidity range, in contrast to the integral v2 values which have previously been observed to decrease at forward rapidities. A softening of the particle spectra at forward angles is found to account for at least part of the integral v2 falloff. The data are found to be consistent with existing constituent quark scaling systematics.

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