Charged hadron transverse momentum distributions in Au+Au collisions at GeV

2002/12/04 by B. B. Back, Christof Roland, M. D. Baker +66 · 2 citations
Mathematics · Physics and Astronomy · #High-Energy Particle Collisions Research #Quantum Chromodynamics and Particle Interactions #Stochastic processes and statistical mechanics #hep-ex #nucl-ex

paper · pdf · doi:10.1016/s0375-9474(02)01479-3

published as Nucl.Phys.A715:745-748,2003 · 4 Pages, 4 Figures, contributed to the Proceedings of Quark Matter 2002, Nantes, France, 18-24 July 2002

arxiv created 2002/12/04 · openalex publication_date 2003/03/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

We present transverse momentum distributions of charged hadrons produced in Au+Au collisions at sqrt(s_NN) = 200 GeV. The evolution of the spectra for transverse momenta p_T from 0.25 to 5GeV/c is studied as a function of collision centrality over a range from 65 to 344 participating nucleons. We find a significant change of the spectral shape between proton-antiproton and peripheral Au+Au collisions. Comparing peripheral to central Au+Au collisions, we find that the yields at the highest p_T exhibit approximate scaling with the number of participating nucleons, rather than scaling with the number of binary collisions.

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