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ZZ production at the LHC: NLO QCD corrections to the loop-induced gluon fusion channel


Grazzini, Massimiliano; Kallweit, Stefan; Wiesemann, Marius; Yook, Jeong Yeon (2018). ZZ production at the LHC: NLO QCD corrections to the loop-induced gluon fusion channel. CERN 240, University of Zurich.

Abstract

We consider QCD radiative corrections to the production of four charged leptons in hadron collisions. We present the computation of the next-to-leading order QCD corrections to the loop-induced gluon fusion contribution. Our predictions include, for the first time, also the quark-gluon partonic channels. The computed corrections, which are formally of O(α3s), turn out to increase the loop-induced Born-level result by an amount ranging from 75% to 71% as s√ ranges from 8 to 13 TeV. We combine our result with state-of-the-art NNLO corrections to the quark annihilation channel, and present updated predictions for fiducial cross sections and distributions for this process.

Abstract

We consider QCD radiative corrections to the production of four charged leptons in hadron collisions. We present the computation of the next-to-leading order QCD corrections to the loop-induced gluon fusion contribution. Our predictions include, for the first time, also the quark-gluon partonic channels. The computed corrections, which are formally of O(α3s), turn out to increase the loop-induced Born-level result by an amount ranging from 75% to 71% as s√ ranges from 8 to 13 TeV. We combine our result with state-of-the-art NNLO corrections to the quark annihilation channel, and present updated predictions for fiducial cross sections and distributions for this process.

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Item Type:Working Paper
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:23 November 2018
Deposited On:18 Jan 2019 07:40
Last Modified:03 May 2019 03:29
Series Name:CERN
OA Status:Green
Related URLs:https://www.zora.uzh.ch/id/eprint/170552/

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