ZZ production at hadron colliders in NNLO QCD

2014/05/31 by F. Cascioli, T. Gehrmann, M. Grazzini +7 · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf · doi:10.1016/j.physletb.2014.06.056

published as PLB 735 (2014) 311 · Reference added, version published on Physics Letters B

arxiv created 2014/09/04 · arxiv updated 2015/06/19

Abstract

We report on the first calculation of next-to-next-to-leading order (NNLO) QCD corrections to the inclusive production of ZZ pairs at hadron colliders. Numerical results are presented for pp collisions with centre-of-mass energy (√(s)) ranging from 7 to 14 TeV. The NNLO corrections increase the NLO result by an amount varying from 11% to 17% as √(s) goes from 7 to 14 TeV. The loop-induced gluon fusion contribution provides about 60% of the total NNLO effect. When going from NLO to NNLO the scale uncertainties do not decrease and remain at the ± 3% level.

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• Study of ZZ and ZH production in the bbττ final state and search for high-mass spin-0 and spin-1 resonances in proton-proton collisions at √(s) = 13 TeV