Forward Physics at STAR: Status of analysis on forward and mid rapidity correlation measurements in p+p and d+Au
arXiv:nucl-ex/0408004
Abstract
Measurements of the production of high energy pi0 mesons at large pseudorapidity, coincident with charged hadrons at mid-rapidity, for proton+proton and deuteron+gold collisions at sqrt(s)_NN=200 GeV are reported. The p+p cross section for inclusive pi0 production follows expectations from next-to-leading order perturbative QCD. Both the inclusive cross section and the di-hadron azimuthal correlations are consistent with a model where parton showers supplement leading-order pQCD. A suppression of the back-to-back azimuthal correlations was observed in d+Au, qualitatively consistent with the gluon saturation picture.
6 pages; 4 eps figures; uses dis04.cls; Submitted talk presented at the "XII International Workshop on Deep Inelastic Scattering" (DIS2004) 14-18 Apr 2004, Strbske Pleso, Slovakia. To be published in proceedings