Ratio of the peak widths in $\Dphi$ (top) and $\Deta$ (bottom) observed in central (0-10\%) and peripheral (50-80\%) collisions as a function of $\pt _{\rm ,trig}$ and $\pt _{\rm ,assoc}$ ranges. The data is compared to different AMPT settings. Note that the $x$-axis combines the $\pta$ and $\ptt$ axis, and therefore, a uniform trend of the values is not expected