Measurement of the inclusive cross-section for the production of jets in association with a Z boson in proton-proton collisions at 8 TeV using the ATLAS detector

Abstract

The inclusive cross-section for jet production in association with a Z boson decaying into an electron-positron pair is measured as a function of the transverse momentum and the absolute rapidity of jets using 19.9 fb${}^{-1}$ of $\sqrt{s}=8$ TeV proton-proton collision data collected with the ATLAS detector at the Large Hadron Collider. The measured Z + jets cross-section is unfolded to the particle level. The cross-section is compared with state-of-the-art Standard Model calculations, including the next-to-leading-order and next-to-next-to-leading-order perturbative QCD calculations, corrected for non-perturbative and QED radiation effects. The results of the measurements cover final-state jets with transverse momenta up to 1 TeV, and show good agreement with fixed-order calculations.

68 pages in total, author list starting page 52, 16 figures, 8 tables, submitted to EPJC. All figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2016-11/

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• Snowmass 2021 whitepaper: Proton structure at the precision frontier
• Testing new physics models with global comparisons to collider measurements: the Contur toolkit
• Determination of the parton distribution functions of the proton from ATLAS measurements of differential $W^{\pm }$ and $Z$ boson production in association with jets
• Precision QCD Physics at the LHC
• Vector Bosons and Jets in Proton Collisions
• Electroweak, QCD and flavour physics studies with ATLAS data from Run 2 of the LHC
• A Projective Phase Space Generator for Hadronic Vector Boson Plus One Jet Production
• Azimuthal correlations in Z+jets events in proton-proton collisions at $\sqrt{s}$ = 13 TeV
• Multiprocess imaging of nuclear modifications on parton distributions in proton-nucleus collisions
• Experimental QCD summary (ICHEP 2020)
• The impact of ATLAS $V$+jet measurements on PDF fits
• Determination of the parton distribution functions of the proton using diverse ATLAS data from $pp$ collisions at $\sqrt{s}=7$, 8 and 13 TeV