ZZ production at hadron colliders in NNLO QCD

F. Cascioli; T. Gehrmann; M. Grazzini; S. Kallweit; P. Maierhöfer; A. von Manteuffel; S. Pozzorini; D. Rathlev; L. Tancredi; E. Weihs

doi:10.1016/j.physletb.2014.06.056

arXiv · 1405.2219

ZZ production at hadron colliders in NNLO QCD

F. Cascioli·T. Gehrmann·M. Grazzini·S. Kallweit·P. Maierhöfer·A. von Manteuffel·S. Pozzorini·D. Rathlev·L. Tancredi·E. Weihs

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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 ($\sqrt{s}$) ranging from 7 to 14 TeV. The NNLO corrections increase the NLO result by an amount varying from $11\%$ to $17\%$ as $\sqrt{s}$ 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 $\pm 3\%$ level.

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F. Cascioli, T. Gehrmann, M. Grazzini, S. Kallweit, P. Maierhöfer, A. von Manteuffel, S. Pozzorini, D. Rathlev, L. Tancredi, E. Weihs. 2014-09-04. ZZ production at hadron colliders in NNLO QCD. https://doi.org/10.1016/j.physletb.2014.06.056

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