Charged hadron transverse momentum distributions in Au+Au collisions at sqrt(s_NN) = 200 GeV
arXiv:hep-ex/0212006 · doi:10.1016/S0375-9474(02)01479-3
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.
4 Pages, 4 Figures, contributed to the Proceedings of Quark Matter 2002, Nantes, France, 18-24 July 2002