Projections of $P_2^{\rm (CD)}$ correlation functions, measured in \PbPb\ collision at $\sqrt{s_{NN}} = 2.76$ TeV, for selected ranges of collisioncentrality. The $\Delta\eta$ and $\Delta\varphi$ projections are calculated as averages of the two-dimensional correlations in the ranges $|\Delta \varphi| \le \pi$ and $|\Delta \eta| \le 1.8$, respectively. Vertical bars and shaded areas represent statistical and systematic uncertainties, respectively. | ![](https://alice-publications.web.cern.ch/sites/default/files/papers/4292/ALICE_PbPb_2.76TeV_P2_CD_AllCent_EtaProjections-96432.png ) ![](https://alice-publications.web.cern.ch/sites/default/files/papers/4292/ALICE_PbPb_2.76TeV_P2_CD_AllCent_PhiProjections-96434.png ) |