Measurement of the inclusive tt¯ cross section in pp collisions at √s = 5.02 TeV using final states with at least one charged lepton

Abstract

The top quark pair production cross section \(\left({\sigma }_{t\overline{t}}\right)\) 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 ± 6.1 (stat) ± 5.6 (syst) ± 1.6 (lumi) 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.