Neutral Pion Suppression at Forward Rapidities in d+Au Collisions at STAR
arXiv:hep-ex/0507093 · doi:10.1063/1.2122039
Abstract
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 <eta>=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.
arXiv comment4 pages, 4 figures. Talk given at the XIII International Workshop on Deep Inelastic Scattering (DIS 2005) 27 April-1 May 2005 in Madison, Wisconsin, USA. To be published in proceedings