Figure 1

Left panel: associated yield per trigger particle as a function of $\Dphi$ and $\Deta$ for $h-\pi$ correlations with $1.5< \pt< 2$ GeV/$c$ in the 0-20% event class.
Right panel: projection of the left panel correlation onto $\Dphi$ averaged over $0.8< |\Deta|< 1.6$ on the near side and $|\Deta|< 1.6$ on the away side. The combined fit and its individual components are superimposed. The figure contains only statistical uncertainty. Systematic uncertainties are mostly correlated and are less than 5%.