Combining QCD and electroweak corrections to dilepton production in the framework of the FEWZ simulation code

Ye Li*, Frank Petriello

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

244 Scopus citations

Abstract

We combine the next-to-next-to-leading order QCD corrections to lepton-pair production through the Drell-Yan mechanism with the next-to-leading order (NLO) electroweak corrections within the framework of the Fully Exclusive W and Z Production (FEWZ) simulation code. Control over both sources of higher-order contributions is necessary for measurements where percent-level theoretical predictions are crucial and in phase-space regions where the NLO electroweak corrections grow large. The inclusion of both corrections in a single simulation code eliminates the need to separately incorporate such effects as final-state radiation and electroweak Sudakov logarithms when comparing many experimental results to theory. We recalculate the NLO electroweak corrections in the complex-mass scheme for both massless and massive final-state leptons, and modify the QCD corrections in the original FEWZ code to maintain consistency with the complex-mass scheme to the lowest order. We present phenomenological results for LHC studies that include both next-to-next-to-leading order QCD and NLO electroweak corrections. In addition, we study several interesting kinematics features induced by experimental cuts in the distribution of photon radiation at the LHC.

Original languageEnglish (US)
Article number094034
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Volume86
Issue number9
DOIs
StatePublished - Nov 21 2012

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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