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

2002-12-20

arxiv.org/abs/nucl-ex/0212021v1

Physics

Nuclear Physics

Nuclear Experiment

3 Pages, 4 Figures, contributed to the Proceedings of the 31st International Conference on High Energy Physics, Amsterdam, Net

Scientific paper

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 5 GeV/C is studied as a function of collision centrality. We find a significant change of the spectral shape between proton-antiproton and peripheral Au+Au collisions. When 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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