期刊
PHYSICS LETTERS B
卷 735, 期 -, 页码 311-313出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2014.06.056
关键词
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资金
- Swiss National Science Foundation (SNF) [CRSII2-141847, 200021-144352, 200020-149517, PP00P2-128552]
- Research Executive Agency (REA) of the European Union [PITN-GA-2010-264564, PITN-GA-2012-316704]
- ERC [340983]
- Swiss National Science Foundation (SNF) [200021_144352] Funding Source: Swiss National Science Foundation (SNF)
We report on the first calculation of next-to-next-to-leading order (NNLO) QCD corrections to the inclusive production of Z-boson pairs at hadron colliders. Numerical results are presented for pp collisions with centre-of-mass energy (root s) ranging from 7 to 14 TeV. The NNLO corrections increase the NLO result by an amount varying from 11% to 17% as root 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. (C) 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license
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