Figure 1

Left panel: associated yield per trigger particle as a function of $\Dphi$ and $\Deta$. The background obtained from the fit function has been subtracted in order to emphasize the near-side peak. Right panel projections to the $\Dphi$ and $\Deta$ axes overlaid with the peak part of the fit function.
[png]   [pdf]   [eps]
[png]   [pdf]   [eps]