Figure 23

The nuclear modification factor $\raa$ as a function of $\pt$ for different particle species. Results for different collision centralities are shown. Statistical and PID systematic uncertainties are plotted as vertical error bars and boxes around the points, respectively. The total normalization uncertainty (pp and $\pbpb$) is indicated in each panel by the vertical scale of the box centered at $\pt = 1 \gevc$ and $\raa $= 1.