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Z-Boson Production in Association with a Jet at Next-To-Next-To-Leading Order in Perturbative QCD
Radja Boughezal1, John Campbell2, R Keith Ellis3
1High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
Abstract:
We present the first complete calculation of Z-boson production in association with a jet in hadronic collisions through next-to-next-to-leading order in perturbative QCD. Our computation uses the recently proposed N-jettiness subtraction scheme to regulate the infrared divergences that appear in the real-emission contributions. We present phenomenological results for 13 TeV proton-proton collisions with fully realistic fiducial cuts on the final-state particles. The remaining theoretical uncertainties after the inclusion of our calculations are at the percent level, making the Z+jet channel ready for precision studies at the LHC run II.
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