Next-to-Next-to Leading Order QCD Predictions for Single Jet Inclusive Production at the LHC

Abstract

(2017) 'Next-to-next-to leading order QCD predictions for single jet inclusive production at the LHC.', Physical review letters., 118 (7). 072002.Further information on publisher's website:https://doi.org/10.1103/PhysRevLett.118.072002Publisher's copyright statement:Reprinted with permission from the American Physical Society: Currie, J., Glover, E.W.N. Pires, J. (2017). Next-to-Next-to Leading Order QCD Predictions for Single Jet Inclusive Production at the LHC. Physical Review Letters 118(7): 072002. c 2017 by the American Physical Society. Readers may view, browse, and/or download material for temporary copying purposes only, provided these uses are for noncommercial personal purposes. Except as provided by law, this material may not be further reproduced, distributed, transmitted, modi ed, adapted, performed, displayed, published, or sold in whole or part, without prior written permission from the American Physical Society.Additional information: Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-pro t purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

MMHT PDFs: Updates and Outlook

“…We now consider the impact of including the NNLO corrections calculated in [11] on the data description. The results are shown in Table 2 for the default treatment of the correlated systematic errors and with the error decorrelation defined in the preceding section.…”

“…For this reason LHC jet data were omitted from the fit, although a number of exploratory studies with different toy models for the NNLO K-factors were performed in [1], and the impact on the gluon PDF was found to be relatively minor. However, in [11] the first calculation of fully differential jet production at NNLO was presented, allowing LHC jet data to be correctly included in a NNLO PDF fit for the first time. In this study NNLO K-factors are presented corresponding to the ATLAS 7 TeV measurement [12], with jet radius R = 0.4, and therefore in these proceedings we consider only this data set.…”

Precise Predictions for Dijet Production at the LHC

“…To improve the theoretical description of dijet observables and make a meaningful comparison to data it is therefore necessary to calculate dijet production to nextto-next-to-leading order (NNLO) accuracy. The NNLO correction to jet production was first discussed in the context of the single jet inclusive cross section [15,16] and in this Letter we report, for the first time, the NNLO corrections to dijet production.…”

“…On this basis we choose the theoretical scale μ ¼ m jj and present detailed results using this scale choice throughout the rest of this Letter. It should be noted that these findings on the scale dependence cannot be transferred to single-jet inclusive production [15], which is a completely different observable: each event contributes exactly once to the dijet production, while yielding multiple entries with different kinematical variables (and consequently a much broader range of scale choice) in the singlejet inclusive cross section.…”

“…[15], we include the leading color NNLO corrections in all partonic subprocesses. The calculation is performed in the NNLO_JET framework, which employs the antenna subtraction method [24,25] to remove all unphysical infrared singularities from the matrix elements [26][27][28].…”