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


Bellm, Johannes; Buckley, Andy; Chen, Xuan; Gehrmann-De Ridder, Aude; Gehrmann, Thomas; Glover, Nigel; Huss, Alexander; Pires, Joao; Höche, Stefan; Huston, Joey; Kuttimalai, Silvan; Plätzer, S; Re, Emanuele (2019). Jet cross sections at the LHC and the quest for higher precision. arXiv.org 1903.12563, University of Zurich.

Abstract

We perform a phenomenological study ofZplus jet, Higgs plus jet and di-jet production atthe Large Hadron Collider. We investigate in particular the dependence of the leading jet crosssection on the jet radius as a function of the jet transverse momentum. Theoretical predictionsare 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 comparedto results obtained from matching next-to-leading order calculations to parton showers. A studyof the scale dependence as a function of the jet radius is used to provide a better estimate of thescale uncertainty for small jet sizes. The non-perturbative corrections as a function of jet radius areestimated from different generators.

Abstract

We perform a phenomenological study ofZplus jet, Higgs plus jet and di-jet production atthe Large Hadron Collider. We investigate in particular the dependence of the leading jet crosssection on the jet radius as a function of the jet transverse momentum. Theoretical predictionsare 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 comparedto results obtained from matching next-to-leading order calculations to parton showers. A studyof the scale dependence as a function of the jet radius is used to provide a better estimate of thescale uncertainty for small jet sizes. The non-perturbative corrections as a function of jet radius areestimated from different generators.

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Item Type:Working Paper
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:2019
Deposited On:06 Jan 2020 15:33
Last Modified:15 Jan 2021 04:37
Series Name:arXiv.org
ISSN:2331-8422
OA Status:Green
Free access at:Related URL. An embargo period may apply.
Related URLs:https://arxiv.org/abs/1903.12563
https://www.zora.uzh.ch/id/eprint/196046/

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