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Effective Field Theory of the Two Higgs Doublet Model

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arxiv 2304.09884 v1 pith:UBUAZYLY submitted 2023-04-19 hep-ph

classification hep-ph
keywords higgstheorybasiseffectivedoubletfieldmodelalignment
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We revisit the effective field theory of the two Higgs doublet model at tree level. The introduction of a novel basis in the UV theory allows us to derive matching coefficients in the effective description that resum important contributions from the Higgs vacuum expectation value. The new basis typically provides a significantly better approximation of the full theory prediction than the traditional approach that utilizes the Higgs basis, particularly for alignment away from the decoupling limit.

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Cited by 1 Pith paper

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  1. A Non-linear Representation of General Scalar Extensions of the Standard Model for HEFT Matching

    hep-ph 2024-11 conditional novelty 6.0 of 10

    The paper constructs a non-linear 'U representation' that separates Goldstone bosons from heavy scalars, enabling straightforward tree-level HEFT matching for general scalar extensions and giving explicit formulas for...

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