We present the calculation of dijet production, doubly-differential in dijet mass, mjj and rapidity difference, ∣y∗∣, 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.
@article{arxiv.1705.10271,
title = {Precise predictions for dijet production at the LHC},
author = {James Currie and Aude Gehrmann-De Ridder and Thomas Gehrmann and E. W. N. Glover and Alexander Huss and Joao Pires},
journal= {arXiv preprint arXiv:1705.10271},
year = {2017}
}