Transverse-Momentum and Collision-Energy Dependence of High-pTHadron Suppression in Au + Au Collisions at Ultrarelativistic Energies

STAR Collaboration

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653 Scopus citations

Abstract

We report high statistics measurements of inclusive charged hadron production in Au + Au and p + p collisions at √sNN = 200 GeV. A large, approximately constant hadron suppression is observed in central Au + Au collisions for 5<pT<12 GeV=c. The collision energy dependence of the yields and the centrality and pT dependence of the suppression provide stringent constraints on theoretical models of suppression. Models incorporating initial-state gluon saturation or partonic energy loss in dense matter are largely consistent with observations. We observe no evidence of pT-dependent suppression, which may be expected from models incorporating jet attenuation in cold nuclear matter or scattering of fragmentation hadrons.

Original languageEnglish (US)
Article number172302
Pages (from-to)1723021-1723026
Number of pages6
JournalPhysical review letters
Volume91
Issue number17
StatePublished - Oct 24 2003

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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