Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV

Details Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV

2002-12-04

arxiv.org/abs/hep-ex/0212006v1

Nucl.Phys.A715:745-748,2003

Physics

High Energy Physics

High Energy Physics - Experiment

4 Pages, 4 Figures, contributed to the Proceedings of Quark Matter 2002, Nantes, France, 18-24 July 2002

Scientific paper

10.1016/S0375-9474(02)01479-3

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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