NNLOPS description of the H$\to b\bar{b}$ decay with MINLO

Abstract

We present an event generator that describes the Higgs boson decay into $b$-quarks at next-to-next-to-leading-order (NNLO) in QCD and allows for a consistent matching to parton shower. For this purpose, we work within the POWHEG framework and employ the MINLO method to produce an NNLO-accurate H$\to b\bar{b}$ event sample which can further be interfaced with a generic Higgs boson production mode. The resulting events, that combine Higgs production and decay, can be matched to parton shower by means of a vetoed shower. As an example, we present a short phenomenological study for associated Higgs production (HZ) and vector boson fusion (VBF) processes. We release the source code that was used to obtain these results as an $\text{h_bbg}$ user process in POWHEG-BOX-V2. We also provide tools that enable interfacing the decay events with events for an arbitrary Higgs production mode and subsequent matching of the combined Les Houches (LH) events with a parton shower.

arXiv comment28 pages, 8 figures. Few changes: improved few sentences throughout the paper, added references, added 1 plot in section 2.1, added 2 plots (1 figure) in section 4.2, removed fixed-order results from HZ plots, added one appendix. Now it matches the version published in JHEP (HZ plots rebinned on arxiv version)

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Cited by in corpus (19)

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• Matching NNLO to parton shower using N${}^3$LL colour-singlet transverse momentum resummation in GENEVA
• Resummed predictions for hadronic Higgs boson decays
• Advancing MiNNLO${}_{\mathrm{PS}}$ to diboson processes: $Z\gamma$ production at NNLO+PS
• $W^{+}{W}^{-}$ production at NNLO+PS with MiNNLO${}_{\mathrm{PS}}$
• Anomalous couplings in associated $VH$ production with Higgs decay to massive $b$ quarks at NNLO in QCD
• Next-to-next-to-leading order event generation for $VH$ production with $H\to b\bar{b}$ decay
• NNLO+PS Monte Carlo simulation of photon pair production with MiNNLOPS
• Hadronic decays of Higgs boson at NNLO matched with parton shower
• Analytic decay width of the Higgs boson to massive bottom quarks at order ${\alpha }_s^3$
• Analytic decay width of the Higgs boson to massive bottom quarks at next-to-next-to-leading order in QCD
• Logarithmically-accurate and positive-definite NLO shower matching
• Higgs boson pair production and decay at NLO in QCD: the $b\bar{b}\gamma \gamma$ final state
• QCD Predictions for Event-Shape Distributions in Hadronic Higgs Decays
• Decay of the charged Higgs boson and the top quark in two-Higgs-doublet model at NNLO in QCD