Precision calculations for top-quark pair production at the LHC
2018 September 20
2018 November 23
In this proceeding we present precision calculation results for top-quark pair production at the LHC at NNLO QCD and NLO EW accuracy. Concerning the combination of QCD and EW corrections we discuss and adopt the multiplicative approach. We use and compare the latest available PDF sets to date, including the photon PDF, i.e. the LUXQED17 and the NNPDF3.1LUXQED. We find that the EW corrections are independent on the two PDF sets at differential level for all the main ttbar distributions. We further discus the size of the EW corrections w.r.t. the theory uncertainties and point out the reduction of the PDF uncertainties for the NNPDF3.1 PDF set.