Suppression of Hadrons with Large Transverse Momentum in Central Au+Au Collisions at $sqrt s sub sub NN = 130 GeV
Abstract
Transverse momentum spectra for charged hadrons and for neutral pions in the range 1 GeV/c < pT < 5 GeV/c have been measured by the PHENIX experiment at RHIC in Au+Au collisions at s_NN=130 GeV. At high pT the spectra from peripheral nuclear collisions are consistent with the naive expectation of scaling the spectra from p+p collisions by the average number of binary nucleon- nucleon collisions. The spectra from central collisions are significantly suppressed when compared to the binary- scaled p+p expectation, and also when compared to similarly binary-scaled peripheral collisions, indicating a novel nuclear effect in central nuclear collisions at RHIC energies.
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