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New constraints on extended Higgs sectors from the trilinear Higgs coupling

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arxiv 2202.03453 v2 pith:WRD4GFNN submitted 2022-02-07 hep-ph

classification hep-ph
keywords higgslambdacouplingextendedmodelparameterresultssectors
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

The trilinear Higgs coupling $\lambda_{hhh}$ is crucial for determining the structure of the Higgs potential and for probing possible effects of physics beyond the Standard Model (SM). Focusing on the Two-Higgs-Doublet Model as a concrete example, we identify parameter regions in which $\lambda_{hhh}$ is significantly enhanced with respect to the SM. Taking into account all relevant corrections up to the two-loop level, we show that already current experimental bounds on $\lambda_{hhh}$ rule out significant parts of the parameter space that would otherwise be unconstrained. We illustrate the interpretation of the results on $\lambda_{hhh}$ for a benchmark scenario. Similar results are expected for wide classes of models with extended Higgs sectors.

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Forward citations

Cited by 6 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

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    hep-ph 2025-07 unverdicted novelty 1.0 of 10

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