Nuclear Effects in the dAu Collisions from Recent RHIC Data

Abstract Neutral pion ( π 0 ) production is calculated in a leading order (LO) perturbative QCD-based model in pp and dAu collisions at s = 200 AGeV at midrapidity. The model includes the transverse component of the initial parton distribution. We compare our results for pp collision to experimental data at RHIC energy. We repeat our calculation for the dAu collision and investigate the interplay between shadowing and multiple scattering. In central dAu collisions the influence of possible jet energy loss in cold nuclear matter is discussed and numerical results are presented.