EW corrections to $t\bar{t}$ distributions: the photon PDF effect

Abstract

In this proceeding we present the impact of the EW corrections on $t\bar{t}$ distributions focusing on the effect of the photon PDF. We use the {\sc NNPDF2.3QED} and {\sc CT14QED} PDF sets, which include the photon PDF. We discuss a detailed comparison between the results obtained from these two PDF sets at NLO QCD+EW accuracy for 13 TeV, focusing on the top-quark $p_T$ and the top-quark pair rapidity. We point out the differences between these two PDF sets and we show that the rapidity of the top-quark pair can be used in order to constrain the photon PDF predicted by the {\sc NNPDF2.3QED} set.

presentation given at 9th International Workshop on Top Quark Physics (TOP 2016), 19-23 September 2016, Olomouc, Czech Republic , to appear in the proceedings; added references

References in corpus (7)

• Theoretical status and prospects for top-quark pair production at hadron colliders
• How bright is the proton? A precise determination of the photon parton distribution function
• Two-loop soft anomalous dimensions and NNLL resummation for heavy quark production
• Threshold Resummation for Top-Pair Hadroproduction to Next-to-Next-to-Leading Log
• Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
• NLO QED contributions to top-pair production at hadron collider
• Study of weak corrections to Drell-Yan, top-quark pair and dijet Production at high energies with MCFM