Power corrections in the N -jettiness subtraction scheme

Radja Boughezal, Xiaohui Liu*, Francis John Petriello

*Corresponding author for this work

Research output: Contribution to journalArticle

52 Scopus citations

Abstract

We discuss the leading-logarithmic power corrections in the N -jettiness subtraction scheme for higher-order perturbative QCD calculations. We compute the next-to-leading order power corrections for an arbitrary N -jet process, and we explicitly calculate the power correction through next-to-next-to-leading order for color-singlet production for both qq¯ and gg initiated processes. Our results are compact and simple to implement numerically. Including the leading power correction in the N -jettiness subtraction scheme substantially improves its numerical efficiency. We discuss what features of our techniques extend to processes containing final-state jets.

Original languageEnglish (US)
Article number160
JournalJournal of High Energy Physics
Volume2017
Issue number3
DOIs
StatePublished - Mar 1 2017

Keywords

  • Effective Field Theories
  • Perturbative QCD

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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