Strength of event-mean transverse momenta correlations (bcorr) in centrality classes of 2% width (by V0M) in Pb-Pb collisions at 2.76 TeV in comparison with models: blue solid line is for HIJING (LHC11a10a bis, kine-level, centrality classes of 10% width are selected by V0M at reco level), green dashed line is for AMPT (LHC13f3c, kine-level, rescattering On, string melting ON, centrality selection into 5% classes is done by division of multiplicity distribution in V0M=V0A+V0C acceptance into quantiles). 

FB windows ηgap=0.8, window width δη=0.4, pT range 0.2-2.0 GeV/c. Data points: rectangles represent systematic uncertainties, statistical errors are shown as vertical bars and usually are of the similar size as the marker.