Anomalous couplings in associated $VH$ production with Higgs decay to massive $b$ quarks at NNLO in QCD

Abstract

We combine the NNLO QCD description of Higgs boson production in association with an electroweak vector boson $V=W\mathrm{or}Z$ with a similarly-precise description of Higgs boson decays into a pair of massive $b$ quarks and with the anomalous couplings that modify interactions of the Higgs and electroweak vector bosons. The resulting numerical code provides the most advanced theoretical tool to investigate such anomalous couplings in the associated Higgs boson production process. We study the impact of anomalous couplings on fiducial cross sections and differential distributions and argue that, with increased QCD precision, smaller anomalous couplings become accessible in kinematic regions where the effects of higher-dimensional operators in the Standard Model Effective Field Theory remain small and the EFT expansion is under control.

28 pages, 8 figures

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Cited by in corpus (14)

• 50 Years of Quantum Chromodynamics
• Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• ZH production in gluon fusion at NLO in QCD
• On the NLO QCD Corrections to Gluon-Initiated ZH Production
• Loop counting matters in SMEFT
• Next-to-next-to-leading order event generation for $VH$ production with $H\to b\bar{b}$ decay
• A new evaluation of the $HZZ$ coupling: direct bounds on anomalous contributions and $CP$ violating effects via a new asymmetry
• Discriminating between Higgs Production Mechanisms via Jet Charge at the LHC
• Les Houches 2023 -- Physics at TeV Colliders: Report on the Standard Model Precision Wishlist
• $gg\to ZH$ : updated predictions at NLO QCD
• $CP$ violation in the $HZZ$ vertex and left-right asymmetries
• $WWh$ anomalous couplings at one loop from a seesaw variant of radiatively-induced neutrino masses
• Optimal estimation of Higgs-Gauge Boson couplings at the future $e^{+}{e}^{-}$ colliders
• Probing CP-violating Higgs-Gauge couplings with Higgsstrahlung at $e^{-}{e}^{+}$ collider