We report high statistics measurements of inclusive charged hadron production in [Formula presented] and [Formula presented] collisions at [Formula presented]. A large, approximately constant hadron suppression is observed in central [Formula presented] collisions for [Formula presented]. The collision energy dependence of the yields and the centrality and [Formula presented] dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy lo...
