Suppression of Hadrons with Large Transverse Momentum in CentralAu+AuCollisions atsNN=130GeV

Transverse momentum spectra for charged hadrons and for neutral pions in the range $1\mathrm{GeV}/c<\mathrm{}{p}_T<5\mathrm{}\mathrm{GeV}/c$ have been measured by the PHENIX experiment at RHIC in $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{s_{\mathrm{NN}}}=130\mathrm{}\mathrm{GeV}$. At high $p_T$ the spectra from peripheral nuclear collisions are consistent with 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-medium effect in central nuclear collisions at RHIC energies.