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Composite two-Higgs doublet model from dilaton effective field theory

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arxiv 2205.03320 v2 pith:X6LIVDSE submitted 2022-05-06 hep-ph hep-lat

Thomas Appelquist , James Ingoldby , Maurizio Piai This is my paper · ORCID
classification hep-phhep-lat
keywords modeltheoryfieldparametercompositeconstructdilatondoublet
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We construct a composite two-Higgs-doublet model (2HDM) within the context of dilaton effective field theory. This EFT describes the particle spectrum observed in lattice simulations of a near-conformal $SU(3)$ gauge field theory. A second Higgs doublet is naturally accommodated within the EFT, used previously to construct a one-Higgs-doublet model. We explore the interplay of phenomenological and EFT requirements, supplemented by information from numerical lattice studies of the $SU(3)$ gauge theory with eight fundamental (Dirac) fermions. We build a viable model with moderate parameter tuning. In the relevant portion of parameter space, we match the model to a conventional general description of 2HDMs, and comment on the role of custodial symmetry (breaking) in the scalar potential. Contributions to the precision electroweak parameter $T$ provide a possible explanation for the recent measurement of the W-boson mass by CDF II.

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Cited by 4 Pith papers

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

  1. Light dilaton from top-down holographic confinement with magnetic fluxes

    hep-th 2026-02 conditional novelty 6.0 of 10

    In a two-flux family of top-down holographic confining theories, the lightest scalar is an approximate dilaton with mass about one tenth of the lightest spin-2 confinement scale, over a wide, untuned region of paramet...

  2. Dilaton Effective Field Theory across the Conformal Edge

    hep-lat 2025-12 conditional novelty 5.0 of 10

    Fitting a dilaton EFT with a free exponent Δ to lattice spectra indicates SU(3) N_f=8 is confining (Δ<4) and SU(2) adjoint is infrared conformal (Δ>4).

  3. On the stability of holographic confinement with magnetic fluxes

    hep-th 2024-11 conditional novelty 5.0 of 10

    A bottom-up holographic model with magnetic flux on a circle shows a confining-to-conformal phase transition that occurs before a tachyonic instability, with the lightest scalar near the transition resembling a dilaton.

  4. Dilatonic states, phase transitions, and criticality in holography

    hep-th 2026-07 accept novelty 3.0 of 10

    A review of holographic examples indicating that a light dilaton appears near critical endpoints of first-order zero-temperature phase transitions, with explicit but lower-dimensional demonstrations.

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