Figure 8

The multiplicity-class dependence of $\sigma_{\Delta\eta}$ (a) and $\sigma_{\Delta\phi}$ (b) in Pb-Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV. The different markers represent the low (i.e. $0.2 < \pt_{,assoc}< \pt_{,trig}< 2.0$ Gev/$c$ with red circles), intermediate (i.e $2.0 < p_\mathrm{T,assoc} < 3.0 < p_\mathrm{T,trig} < 4.0$ GeV/$c$ with blue squares), and high (i.e. $3.0 < \pt_{,assoc}< 8.0< \pt_{,trig}< 15.0$ Gev/$c$ with green triangles) transverse momentum regions used in this analysis.