\ Azimuthal correlation distributions measured in 30--50\% \PbPb collisions for isolated-narrow (full-light blue circles) and isolated wide (empty-violet squares) cluster triggers, and isolated-prompt photon triggers (empty-orange crosses) with 20 $$ \ptT~$$ 25 GeV/$\it{c}$, and for different \zt~intervals (each panel) The vertical lines represent the statistical uncertainties The dashed-green line at $|\Delta \varphi|=3/5\pi$ indicates the lower limit of the integration used in the \Dzt calculation.