Cross section predictions of the Z boson in association with jets at 14 TeV center-of-mass energy in proton–proton collisions

Abstract

: QCD predictions of the Z (Z→ l+l−) boson in association with jets (up to 2 jets) in proton–proton collisionsare presented in this study. The results are predicted at LO and NLO accuracy using two most recent parton distributionfunctions, CT14 and MMHT2014. LO and NLO corrections are obtained with LO, NLO, and NNLO PDFs to find outthe best PDF, which provides well compatible predictions with the experimental measurements. QCD predictions areperformed at 13 and 14 TeV center-of-mass energies. To verify the obtained results, the predictions are compared with themeasured results by ATLAS collaboration. NLO QCD predictions obtained by using NLO and NNLO PDFs show goodagreement with the experimental data. The comparison of NLO predictions at 13 and 14 TeV center-of-mass energiesshows that the Large Hadron Collider will provide approximately 9% more yield at 14 TeV center-of-mass energy thanthe yield at 13 TeV center-of-mass energy for the Z boson in association with 1 and 2 jets.