A Study of QCD Radiation in VBF Higgs Production with Vincia and Pythia

Höche, Stefan; Mrenna, Stephen; Payne, Shay; Preuss, Christian Tobias; Skands, Peter

doi:10.21468/SciPostPhys.12.1.010

Title: A Study of QCD Radiation in VBF Higgs Production with Vincia and Pythia

Journal Article · 10 January 2022 · SciPost Physics

DOI: https://doi.org/10.21468/SciPostPhys.12.1.010 · OSTI ID:1839136

Höche, Stefan ^[1]; Mrenna, Stephen ^[1]; Payne, Shay ^[2]; Preuss, Christian Tobias ^[2]; Skands, Peter ^[2]

Fermi National Accelerator Laboratory
Monash University

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.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11359

OSTI ID:: 1839136

Journal Information:: SciPost Physics, Journal Name: SciPost Physics Journal Issue: 1 Vol. 12; ISSN 2542-4653

Publisher:: Stichting SciPostCopyright Statement

Country of Publication:: Netherlands

Language:: English

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