Next-to-leading-logarithmic power corrections for N -jettiness subtraction in color-singlet production

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

We present a detailed derivation of the power corrections to the factorization theorem for the 0-jettiness event shape variable T. Our calculation is performed directly in QCD without using the formalism of effective field theory. We analytically calculate the next-to-leading logarithmic power corrections for small T at next-to-leading order in the strong coupling constant, extending previous computations which obtained only the leading-logarithmic power corrections. We address a discrepancy in the literature between results for the leading-logarithmic power corrections to a particular definition of 0-jettiness. We present a numerical study of the power corrections in the context of their application to the N-jettiness subtraction method for higher-order calculations, using gluon-fusion Higgs production as an example. The inclusion of the next-to-leading-logarithmic power corrections further improves the numerical efficiency of the approach beyond the improvement obtained from the leading-logarithmic power corrections.

Original languageEnglish (US)
Article number073008
JournalPhysical Review D
Volume97
Issue number7
DOIs
StatePublished - Apr 1 2018

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

Fingerprint Dive into the research topics of 'Next-to-leading-logarithmic power corrections for N -jettiness subtraction in color-singlet production'. Together they form a unique fingerprint.

Cite this