QCD parton showers and NLO EW corrections to Drell-Yan

Peter Richardson, Renat R. Sadykov, Andrey A. Sapronov, Michael H. Seymour, Peter Z. Skands

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4 Citations (Scopus)

Abstract

We report on the implementation of an interface between the SANC generator framework for Drell-Yan hard processes, which includes next-to-leading order electroweak (NLO EW) corrections, and the Herwig++ and Pythia8 QCD parton shower Monte Carlos. A special aspect of this implementation is that the initial-state shower evolution in both shower generators has been augmented to handle the case of an incoming photon-in-aproton, diagrams for which appear at the NLO EW level. The difference between shower algorithms leads to residual differences in the relative corrections of 2-3% in the pT (μ) distributions at pT (μ) ≳50GeV (where the NLO EW correction itself is of order 10%).

Original languageEnglish
Article number89
JournalJournal of High Energy Physics
Volume2012
Issue number6
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • Hadronic colliders
  • NLO computations
  • QCD
  • Standard model

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