arXiv : Phenomenology of NNLO jet production at the LHC and its impact on parton distributions

Abdul Khalek, Rabah; Giani, Tommaso; Glover, Nigel; Gehrmann-De Ridder, Aude; Huss, Alexander; Rojo, Juan; Nocera, Emanuele R.; Forte, Stefano; Pires, Joao; Gehrmann, Thomas; Stagnitto, Giovanni

doi:10.1140/epjc/s10052-020-8328-5

Article
Report number	arXiv:2005.11327 ; CERN-TH-2020-073 ; IPPP/20/17 ; Nikhef/2020-001 ; TIF-UNIMI-2020-3 ; ZU-TH 15/20 ; TIF-UNIMI-2020-3, ZU-TH 15/20
Title	Phenomenology of NNLO jet production at the LHC and its impact on parton distributions
Author(s)	Abdul Khalek, Rabah (Vrije U., Amsterdam ; Nikhef, Amsterdam) ; Forte, Stefano (INFN, Milan ; Milan U.) ; Gehrmann, Thomas (Zurich U.) ; Gehrmann-De Ridder, Aude (Zurich U. ; Zurich, ETH) ; Giani, Tommaso (U. Edinburgh, Higgs Ctr. Theor. Phys.) ; Glover, Nigel (Durham U., IPPP) ; Huss, Alexander (Durham U., IPPP ; CERN) ; Nocera, Emanuele R. (Nikhef, Amsterdam) ; Pires, Joao (CMAF, Lisbon) ; Rojo, Juan (Vrije U., Amsterdam ; Nikhef, Amsterdam) ; Stagnitto, Giovanni (INFN, Milan ; Milan U. ; Paris, LPTHE ; Diderot U., Paris)
Publication	2020-08-31
Imprint	2020-05-22
Number of pages	34
Note	34 pages, 7 figures. Extended discussion of the impact of decorrelation models for the ATLAS jet data, version accepted for publication in EPJC
In:	Eur. Phys. J. C 80 (2020) 797
DOI	10.1140/epjc/s10052-020-8328-5
Subject category	hep-ex ; Particle Physics - Experiment ; hep-ph ; Particle Physics - Phenomenology
Abstract	We present a systematic investigation of jet production at hadron colliders from a phenomenological point of view, with the dual aim of providing a validation of theoretical calculations and guidance to future determinations of parton distributions (PDFs). We account for all available inclusive jet and dijet production measurements from ATLAS and CMS at 7 and 8 TeV by including them in a global PDF determination, and comparing to theoretical predictions at NNLO QCD supplemented by electroweak (EW) corrections. We assess the compatibility of the PDFs, specifically the gluon, obtained before and after inclusion of the jet data. We compare the single-inclusive jet and dijet observables in terms of perturbative behaviour upon inclusion of QCD and EW corrections, impact on the PDFs, and global fit quality. In the single-inclusive case, we also investigate the role played by different scale choices and the stability of the results upon changes in modelling of the correlated experimental systematics.
Copyright/License	publication: © 2020-2025 The Author(s) (License: CC-BY-4.0) preprint: (License: arXiv nonexclusive-distrib 1.0)

$The NNLO QCD $K$-factors, Eq.~(\ref{eq:kfactor}), for the ATLAS 7 TeV (top) and CMS 8 TeV (bottom) single-inclusive jet cross-sections evaluated using NNPDF3.1 PDFs and scale $\mu=\widehat{H}_T$. Results are shown as a function of the jet $p_T$ in different jet rapidity bins, with the central (forward) bins shown in the left (right) plot.$ $The NNLO QCD $K$-factors, Eq.~(\ref{eq:kfactor}), for the ATLAS 7 TeV (top) and CMS 8 TeV (bottom) single-inclusive jet cross-sections evaluated using NNPDF3.1 PDFs and scale $\mu=\widehat{H}_T$. Results are shown as a function of the jet $p_T$ in different jet rapidity bins, with the central (forward) bins shown in the left (right) plot.$ $The NNLO QCD $K$-factors, Eq.~(\ref{eq:kfactor}), for the ATLAS 7 TeV (top) and CMS 8 TeV (bottom) single-inclusive jet cross-sections evaluated using NNPDF3.1 PDFs and scale $\mu=\widehat{H}_T$. Results are shown as a function of the jet $p_T$ in different jet rapidity bins, with the central (forward) bins shown in the left (right) plot.$ Show more plots

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