A study of QCD radiation in VBF Higgs production with VINCIA and PYTHIA

Stefan Höche, Stephen Mrenna, Shay Payne, Christian T. Preuss, Peter Skands

Research output: Contribution to journalArticleResearchpeer-review


We discuss and illustrate the properties of several parton-shower algorithms available in PYTHIA and VINCIA, in the context of Higgs production via vector boson fusion (VBF). In particular, the distinctive colour topology of VBF processes allows to define observables sensitive to the coherent radiation pattern of additional jets. We study a set of such observables, using the VINCIA sector-antenna shower as our main reference, and contrast it to PYTHIA’s transverse-momentum-ordered DGLAP shower as well as PYTHIA’s dipole-improved shower. We then investigate the robustness of these predictions as successive levels of higher-order perturbative matrix elements are incorporated, including next-to-leading-order matched and tree-level merged calculations, using POWHEG BOX and SHERPA respectively to generate the hard events.

Original languageEnglish
Article number010
Number of pages31
JournalSciPost Physics
Issue number1
Publication statusPublished - 10 Jan 2022

Cite this