Next-to-next-to-leading order event generation for VH production with H → bb¯ decay

Silvia Zanoli, Mauro Chiesa, Emanuele Re, Marius Wiesemann, Giulia Zanderighi

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10 Scopus citations

Abstract

We consider the Higgsstrahlung process in hadronic collisions and present the computation of next-to-next-to-leading order predictions matched to parton showers for both production and H → bb¯ decay employing the MiNNLOPS method. We present predictions for ZH and W±H production including spin correlations and off-shell effects by calculating the full processes pp → ℓ+H → ℓ+bb¯ , pp → νν¯ H → νν¯ bb¯ and pp → ℓ±νH → ℓ±ν¯ bb¯ in the narrow-width approximation for the Higgs boson. For the W±H process, NNLO+PS accuracy in production and decay is achieved for the first time. Our calculations are validated against earlier simulations in the NNLOPS approach that includes NNLO corrections via multi-differential reweighting. The new MiNNLOPS generators for these processes, which evaluate NNLO corrections on-the-fly in the event generation, will supersede those earlier calculations. Our predictions are in good agreement with recent measurements of the Higgsstrahlung cross sections.

Original languageEnglish
Article number8
JournalJournal of High Energy Physics
Volume2022
Issue number7
DOIs
StatePublished - Jul 2022

Keywords

  • Higgs Production
  • Higher-Order Perturbative Calculations
  • Parton Shower
  • Resummation

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