Parton-shower and fixed-order QCD effects in Higgs boson production in weak-boson fusion and its decays to bottom quarks (17'+3')

6 May 2026, 11:35
20m
Sala SATURNO B, First Floor (Hotel Carlton)

Sala SATURNO B, First Floor

Hotel Carlton

Talk WG3 Electroweak Physics, top, Higgs and Beyond the Standard Model WG3 Electro-weak physics/higgs/top and BSM

Speaker

Arnd Behring (Max Planck Institute for Physics)

Description

I report on our recent calculations for Higgs production in weak-boson fusion with subsequent decays of the Higgs boson to bottom quarks. We take into account NNLO QCD corrections to the production and decay and also consider a parton-shower-based description for the Higgs decay. We observe large corrections to fiducial observables in the fixed-order calculation, which we trace back to mainly soft and collinear QCD radiation from the decay. We then show that a parton-shower-based calculation can help to improve the description.

Speaker confirmation Yes

Author

Arnd Behring (Max Planck Institute for Physics)

Co-authors

Giulia Marcella Maria Zanderighi (Max Planck Institute for Physics) Ivan Novikov (KIT) Kirill Melnikov (KIT)

Presentation materials