In this work we perform the first ever calculation of jet event shapes at hadron colliders at next-to-next-to leading order (NNLO) in QCD. The inclusion of higher order corrections removes the shape difference observed between data and next-to-leading order predictions. The theory uncertainty at NNLO is comparable to, or slightly larger than, existing measurements. Except for narrow kinematical ranges where all-order resummation becomes important, the NNLO predictions for the event shapes considered in the present work are reliable. As a prime application of the results derived in this work we provide a detailed investigation of the prospects for the precision determination of the strong coupling constant and its running through TeV scales from LHC data.
@article{arxiv.2301.01086,
title = {NNLO QCD corrections to event shapes at the LHC},
author = {Manuel Alvarez and Josu Cantero and Michal Czakon and Javier Llorente and Alexander Mitov and Rene Poncelet},
journal= {arXiv preprint arXiv:2301.01086},
year = {2023}
}
Comments
24 pages, 9 figures, numerical results are provided here: https://www.precision.hep.phy.cam.ac.uk/results/hf-jets ; v2: updated references and acknowledgements, minor textual changes