Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and $t\bar{t}$ system kinematic observables using proton--proton collisions a
Covariance matrix between the $|{y}^{t,2}|\otimes p_{T}^{t,2}$ absolute differential cross-section at particle level for 0 < $|{y}^{t,2}|$ < 0.2 and the $|{y}^{t,2}|\otimes p_{T}^{t,2}$ absolute diffe