The automation of next-to-leading order electroweak calculations

Summary, in English

We present the key features relevant to the automated computation of all the leading- and next-to-leading order contributions to short-distance cross sections in a mixed-coupling expansion, with special emphasis on the first subleading NLO term in the QCD+EW scenario, commonly referred to as NLO EW corrections. We discuss, in particular, the FKS subtraction in the context of a mixed-coupling expansion; the extension of the FKS subtraction to processes that include final-state tagged particles, defined by means of fragmentation functions; and some properties of the complex mass scheme. We combine the present paper with the release of a new version of MadGraph5_aMC@NLO, capable of dealing with mixed-coupling expansions. We use the code to obtain illustrative inclusive and differential results for the 13-TeV LHC.

• Author: R. Frederix; S. Frixione; V. Hirschi; D. Pagani; H. S. Shao; M. Zaro
• Publishing year: 2018-07-01
• Language: English
• Publication/Series: Journal of High Energy Physics
• Volume: 2018
• Issue: 7
• Links: http://dx.doi.org/10.1007/JHEP07(2018)185
• Document type: Journal article
• Publisher: Springer
• Topic: Subatomic Physics
• Keywords: NLO Computations
• Status: Published
• ISBN/ISSN/Other: ISSN: 1029-8479