Disentangling Centrality Bias and Final-State Effects in the Production of High- pT Neutral Pions Using Direct Photon in d+Au Collisions at sNN =200 GeV
PHENIX presents a simultaneous measurement of the production of direct γ and π0 in d+Au collisions at sNN=200 GeV over a pT range of 7.5 to 18 GeV/c for different event samples selected by event activity, i.e., charged-particle multiplicity detected at forward rapidity. Direct-photon yields are used to empirically estimate the contribution of hard-scattering processes in the different event sample
