The automation of next-to-leading order electroweak calculations

Research output: Contribution to journalArticle

Abstract

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.

Details

Authors
  • R. Frederix
  • S. Frixione
  • V. Hirschi
  • D. Pagani
  • H. S. Shao
  • M. Zaro
External organisations
  • Technical University of Munich
  • INFN Section of Genova
  • ETH Zürich
  • Paris-Sorbonne University
  • The French National Centre for Scientific Research (CNRS)
  • National Institute for Subatomic Physics
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Subatomic Physics

Keywords

  • NLO Computations
Original languageEnglish
Article number185
JournalJournal of High Energy Physics
Volume2018
Issue number7
Publication statusPublished - 2018 Jul 1
Publication categoryResearch
Peer-reviewedYes
Externally publishedYes