Jet cross sections at the LHC and the quest for higher precision

Author(s)
Johannes Bellm, Andy Buckley, Xuan Chen, Aude Gehrmann-De Ridder, Thomas Gehrmann, Nigel Glover, Stefan Höche, Alexander Huss, Joey Huston, Silvan Kuttimalai, Joao Pires, Simon Plätzer, Emanuele Re
Abstract

We perform a phenomenological study of $Z$ plus jet, Higgs plus jet and di-jet production at the Large Hadron Collider. We investigate in particular the dependence of the leading jet cross section on the jet radius as a function of the jet transverse momentum. Theoretical predictions are obtained using perturbative QCD calculations at the next-to and next-to-next-to-leading order, using a range of renormalization and factorization scales. The fixed order predictions are compared to results obtained from matching next-to-leading order calculations to parton showers. A study of the scale dependence as a function of the jet radius is used to provide a better estimate of the scale uncertainty for small jet sizes. The non-perturbative corrections as a function of jet radius are estimated from different generators.

Organisation(s)
Particle Physics
External organisation(s)
Laboratoire d'Annecy-le-Vieux de Physique Théorique (LAPTh), European Organization for Nuclear Research (CERN), Lund University, University of Glasgow, Universität Zürich (UZH), Eidgenössische Technische Hochschule Zürich, Durham University, Universidade de Lisboa, SLAC National Accelerator Laboratory, Fermi National Accelerator Laboratory, Michigan State University
Journal
European Physical Journal C
Volume
80
No. of pages
23
ISSN
1434-6044
Publication date
03-2019
Peer reviewed
Yes
Austrian Fields of Science 2012
103012 High energy physics
Keywords
Portal url
https://ucris.univie.ac.at/portal/en/publications/jet-cross-sections-at-the-lhc-and-the-quest-for-higher-precision(48acb3ca-feb9-45ce-bd4b-1490a47088bc).html