W -Boson Production in Association with a Jet at Next-to-Next-to-Leading Order in Perturbative QCD

Radja Boughezal, Christfried Focke, Xiaohui Liu, Francis John Petriello

Research output: Contribution to journalArticlepeer-review

180 Scopus citations

Abstract

We present the complete calculation of W-boson production in association with a jet in hadronic collisions through next-to-next-to-leading order (NNLO) in perturbative QCD. To cancel infrared divergences, we discuss a new subtraction method that exploits the fact that the N-jettiness event-shape variable fully captures the singularity structure of QCD amplitudes with final-state partons. This method holds for processes with an arbitrary number of jets and is easily implemented into existing frameworks for higher-order calculations. We present initial phenomenological results for W+jet production at the LHC. The NNLO corrections are small and lead to a significantly reduced theoretical error, opening the door to precision measurements in the W+jet channel at the LHC.

Original languageEnglish (US)
Article number062002
JournalPhysical review letters
Volume115
Issue number6
DOIs
StatePublished - Aug 7 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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