Precise predictions for dijet production at the LHC

Abstract

We present the calculation of dijet production, doubly-differential in dijet mass, $m_{jj}$ and rapidity difference, $|y^{\ast }|$, at leading colour in all partonic channels at next-to-next-to-leading order (NNLO) in perturbative QCD. We consider the long-standing problems associated with scale choice for dijet production at next-to-leading order (NLO) and investigate the impact of including the NNLO contribution. We find that the NNLO theory provides reliable predictions, even when using scale choices which display pathological behaviour at NLO. We choose the dijet invariant mass as the theoretical scale on the grounds of perturbative convergence and residual scale variation and compare the predictions to the ATLAS 7 TeV 4.5 fb${}^{-1}$ data.

5 pages, 5 figures

References in corpus (5)

• Parton distributions in the LHC era: MMHT 2014 PDFs
• Search for new phenomena in the dijet mass distribution using $p-p$ collision data at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for resonances and quantum black holes using dijet mass spectra in proton-proton collisions at sqrt(s) = 8 TeV
• Measurement of the dijet invariant mass cross section in proton anti-proton collisions at sqrt{s} = 1.96 TeV
• Study of weak corrections to Drell-Yan, top-quark pair and dijet Production at high energies with MCFM

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• Full NLO corrections to 3-jet production and R32 at the LHC
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• Jet cross sections and transverse momentum distributions with NNLOJET
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