Measurement of inclusive and differential cross sections of $t\bar t$ and $t\bar t$ in association with heavy flavours crosssections in CMS

A comprehensive set of measurements of top quark pair production is presented at a centre-of-mass energy of 13 TeV. The measurement of the inclusive cross-section in final states with one $e$ or $\mu$ and an hadronically decaying $\tau$lepton is reported. The measurument of the cross section for the production of $t\bar{t}$ in association with a pair of b-jets or two light jets using different final states is presented. A measurement is reported of differential $t\bar{t}$ production cross sections, where top quarks are produced at large transverse momenta.