Centrality dependence of high pT hadron suppression in Au+Au collisions at sqrt(sNN)=130 GeV
Abstract
Description
Inclusive transverse momentum distributions of charged hadrons within 0.2<pT<6.0 GeV/c have been measured over a broad range of centrality for Au+Au collisions at sqrt(sNN)=130 GeV. Hadron yields are suppressed at high pT in central collisions relative to peripheral collisions and to a nucleon-nucleon reference scaled for collision geometry. Peripheral collisions are not suppressed relative to the nucleon-nucleon reference. The suppression varies continuously at intermediate centralities. The results indicate significant nuclear medium effects on high pT hadron production in heavy ion collisions at high energy.
As published. Change from v1: expanded discussion of systematic uncertainties
As published. Change from v1: expanded discussion of systematic uncertainties