Neutral Pion Suppression at Forward Rapidities in d+Au Collisions at STAR

Details Neutral Pion Suppression at Forward Rapidities in d+Au Collisions at STAR Neutral Pion Suppression at Forward Rapidities in d+Au Collisions at STAR

2005-07-22

arxiv.org/abs/hep-ex/0507093v1

AIP Conf.Proc.792:291-294,2005

Physics

High Energy Physics

High Energy Physics - Experiment

4 pages, 4 figures. Talk given at the XIII International Workshop on Deep Inelastic Scattering (DIS 2005) 27 April-1 May 2005

Scientific paper

10.1063/1.2122039

Measurements of the inclusive yields of pi0 mesons in p+p and d+Au collisions at center of mass energy sqrt(s_NN)=200 GeV and pseudorapidity =4.00 (d beam direction) are reported. The yield for p+p collisions is in general agreement with perturbative QCD calculations. The d+Au yield is in agreement with a calculation which models the Au nucleus as a Color Glass Condensate for forward particle production. The nuclear modification factor derived from the inclusive yields is qualitatively consistent with models which suppress the gluon density in nuclei.

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