Neutral pion measurements in polarized proton collisions from PHENIX at RHIC Original Research Article

The Relativistic Heavy Ion Collider (RHIC) started operation as a polarized proton collider in December, 2001 with transverse-spin beams. This report presents the preliminary result for the absolute neutral pion production cross section at View the MathML source in the mid-rapidity region by the PHENIX experiment. We compare this result to the prediction of a next-to-leading order perturbative QCD calculation. The measurement of the neutral pion asymmetries in this run and in future runs are also discussed.