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H-COUP Version 3: A program for one-loop corrected decays of any Higgs bosons in non-minimal Higgs models

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arxiv 2311.15892 v1 pith:2TEM6FOG submitted 2023-11-27 hep-ph

Masashi Aiko , Shinya Kanemura , Mariko Kikuchi , Kodai Sakurai , Kei Yagyu This is my paper · ORCID
classification hep-ph
keywords higgsh-coupbosonsmodelone-loopversioncorrectionsdoublet
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The H-COUP program is provided as a package of Fortran codes, which can compute observables related to Higgs bosons including radiative corrections in various extended Higgs sectors. We give a manual for the latest version of H-COUP (H-COUP_3.0), in which decay rates and branching ratios of all the Higgs bosons can be calculated at one-loop level in EW and Higgs interactions with QCD corrections in the Higgs singlet model, four types of the two Higgs doublet model with a softly-broken $Z_2$ symmetry, and the inert doublet model. The previous version (H-COUP_2.0) can evaluate those only for the standard model like Higgs boson with the mass of 125 GeV ($h$). In H-COUP_3.0, renormalized quantities are computed based on the gauge independent on-shell renormalization scheme. The source code of H-COUP_3.0 can be downloaded via the following link: \url{http://www-het.phys.sci.osaka-u.ac.jp/~hcoup}. By using H-COUP_3.0, we can compare the precise measurements of the properties of $h$ and direct searches for additional Higgs bosons with their predictions at one-loop level, by which we can reconstruct the structure of the Higgs sector.

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Cited by 2 Pith papers

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  1. Probing the Inert Doublet Model via Vector-Boson Fusion at a Muon Collider

    hep-ph 2024-11 conditional novelty 6.0 of 10

    A 10 TeV muon collider could discover inert-doublet scalars produced via vector-boson fusion, reaching 5 sigma for selected benchmark points with machine-learning analysis, while 3 TeV lacks sensitivity.

  2. New renormalization scheme in extended Higgs sectors for Higgs precision measurements

    hep-ph 2024-11 conditional novelty 3.0 of 10

    A new 2HDM renormalization scheme fixes the mixing-angle counterterms so that h to ZZ* and h to tau tau NLO rates equal the tree-level scaled SM rates, giving unambiguous NLO predictions for other Higgs decays.

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