Abstract
Suppression measurements for neutral pions (${\ensuremath{\pi}}^{0}$) are used to investigate the predicted path length $L$ and transverse momentum ${p}_{T}$ dependent jet quenching patterns of the hot QCD medium produced in $\mathrm{Au}+\mathrm{Au}$ collisions at $\sqrt{{s}_{\mathit{NN}}}=200$ GeV. The observed scaling patterns show the predicted trends for jet-medium interactions dominated by radiative energy loss. They also allow simple estimates of the transport coefficient $\stackrel{\ifmmode \hat{}\else \^{}\fi{}}{q}$ and the ratio of viscosity to entropy density $\ensuremath{\eta}/s$. These estimates indicate that the short mean free path $\ensuremath{\lambda}$ in the QCD medium leading to hydrodynamic-like flow with a small value of $\ensuremath{\eta}/s$ is also responsible for the strong suppression observed.
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