title: Z-Boson Production in Association with a Jet at Next-To-Next-To-Leading Order in Perturbative QCD.
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.
authors.affiliation: High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.
authors.forename: Radja
authors.initials: R
authors.lastname: Boughezal
authors.affiliation: Fermilab, P.O.Box 500, Batavia, Illinois 60510, USA.
authors.forename: John
authors.initials: J
authors.lastname: Campbell
authors.affiliation: Institute for Particle Physics Phenomenology, Department of Physics, University of Durham, Durham, DH1 3LE, United Kingdom.
authors.forename: R Keith
authors.initials: RK
authors.lastname: Ellis
authors.affiliation: Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: Christfried
authors.initials: C
authors.lastname: Focke
authors.affiliation: Fermilab, P.O.Box 500, Batavia, Illinois 60510, USA.
authors.forename: Walter
authors.initials: W
authors.lastname: Giele
authors.affiliation: Maryland Center for Fundamental Physics, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Xiaohui
authors.initials: X
authors.lastname: Liu
authors.affiliation: High Energy Physics Division, Argonne National Laboratory, Argonne, Illinois 60439, USA.|Department of Physics and Astronomy, Northwestern University, Evanston, Illinois 60208, USA.
authors.forename: Frank
authors.initials: F
authors.lastname: Petriello