The ratio of the \rg distributions for the low and high \zg selections for \pp and \PbPb collisions at \fivenn for jets with $60 \leq $ \ptjetch $ 80$ \GeVc. The ratios shows that in \PbPb collisions the high \zg selection has significantly narrower jets compared to \pp collisions. The dashed line in the bottom panel represents the ratio of the integral of the \PbPb collision distribution to the integral of the \pp collision distribution.