Measurement of the inclusive $t\overline{t}$ cross section in pp collisions at $\sqrt{s}$ = 5.02 TeV using final states with at least one charged lepton

The top quark pair production cross section (${\sigma }_{t\overline{t}}$) is measured for the first time in pp collisions at a center-of-mass energy of 5.02 TeV. The data were collected by the CMS experiment at the LHC and correspond to an integrated luminosity of 27.4 pb${}^{-1}$. The measurement is performed by analyzing events with at least one charged lepton. The measured cross section is ${\sigma }_{t\overline{t}}=69.5\pm 6.1\left(stat\right)\pm 5.6\left(syst\right)\pm 1.6\left(lumi\right)$ pb, with a total relative uncertainty of 12%. The result is in agreement with the expectation from the standard model. The impact of the presented measurement on the determination of the gluon distribution function is investigated.