NNLO QCD corrections in full colour for jet production observables at the LHC

Abstract

Calculations for processes involving a high multiplicity of coloured particles often employ a leading colour approximation, where only the leading terms in the expansion of the number of colours $N_c$ and the number of flavours $n_f$ are retained. This approximation of the full colour result is motivated by the $1/N_c^2$ suppression of the first subleading terms and by the increasing complexity of including subleading colour contributions to the calculation. In this work, we present the calculations using the antenna subtraction method in the NNLOJET framework for the NNLO QCD corrections at full colour for several jet observables at the LHC. The single jet inclusive cross section is calculated doubly differential in transverse momentum and absolute rapidity and compared with the CMS measurement at 13 TeV. A calculation for dijet production doubly differential in dijet mass and rapidity difference is also performed and compared with the ATLAS 7 TeV data. Lastly, a triply differential dijet cross section in average transverse momentum, rapidity separation and dijet system boost is calculated and compared with the CMS 8 TeV data. The impact of the subleading colour contributions to the leading colour approximation is assessed in detail for all three types of observables and as a function of the jet cone size. The subleading colour contributions play a potentially sizable role in the description of the triply differential distributions, which probe kinematical configurations that are not easily accessed by any of the other observables.

31 pages, 16 figures, data for figures included as auxiliary files

References in corpus (22)

• The automated computation of tree-level and next-to-leading order differential cross sections, and their matching to parton shower simulations
• LHAPDF6: parton density access in the LHC precision era
• Parton distributions in the LHC era: MMHT 2014 PDFs
• An NNLO subtraction formalism in hadron collisions and its application to Higgs boson production at the LHC
• The Path to Proton Structure at One-Percent Accuracy
• A novel subtraction scheme for double-real radiation at NNLO
• Precise Predictions for W + 4 Jet Production at the Large Hadron Collider
• Collider Physics at the Precision Frontier
• Precise predictions for dijet production at the LHC
• Pentagon Functions for Scattering of Five Massless Particles
• A first next-to-next-to-leading order study of three-jet production at the LHC
• Triphoton production at hadron colliders in NNLO QCD
• NNLO QCD corrections to three-photon production at the LHC
• NNLO QCD corrections to diphoton production with an additional jet at the LHC
• Leading-Color Two-Loop QCD Corrections for Three-Jet Production at Hadron Colliders
• Two-loop helicity amplitudes for diphoton plus jet production in full color
• Two-loop leading colour QCD corrections to $q\bar{q}\to \gamma \gamma g$ and $qg\to \gamma \gamma q$
• Leading-Color Two-Loop QCD Corrections for Three-Photon Production at Hadron Colliders
• Two-loop leading-color helicity amplitudes for three-photon production at the LHC
• Two-loop leading-colour QCD helicity amplitudes for two-photon plus jet production at the LHC
• Study of weak corrections to Drell-Yan, top-quark pair and dijet Production at high energies with MCFM
• Phenomenology of NNLO jet production at the LHC and its impact on parton distributions

Cited by in corpus (6)

• 50 Years of Quantum Chromodynamics
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• A global analysis of ALP-mediated multiboson production at the LHC
• Determination of the strong coupling and its running from measurements of inclusive jet production
• Les Houches study on inclusive jet production at NNLO+NNLL