Figure 1

The ($\Delta y,\Delta\varphi$) correlation functions for like-sign pions, kaons, and protons pairs (top-to-bottom) in the highest (0--0.17\%), the middle (30--40\%), and lowest (90--100\%) multiplicity classes (left-to-right) of pp collisions at $\sqrt{s} = 13$ TeV using the $C_{\rm{R}}$ definition.