ZZ production at hadron colliders in NNLO QCD

• DOI: 10.1016/j.physletb.2014.06.056
• Publication Date: 2014-06-25T10:00:49Z
• Authors: F. Cascioli; T. Gehrmann; M. Grazzini; S. Kallweit; P. Maierhöfer; A. von Manteuffel; S. Pozzorini; D. Rathlev; L. Tancredi; E. Weihs
• Keywords: Nuclear and High Energy Physics; 530 Physics; FOS: Physical sciences; 10192 Physics Institute; 01 natural sciences; 7. Clean energy; High Energy Physics - Phenomenology; High Energy Physics - Phenomenology (hep-ph); 0103 physical sciences; 3106 Nuclear and High Energy Physics

Reference added, version published on Physics Letters B<br/>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.<br/>