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Unitarity bounds for all symmetry-constrained 3HDMs

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arxiv 2204.13130 v1 pith:SIWPS2IJ submitted 2022-04-27 hep-ph

Unitarity bounds for all symmetry-constrained 3HDMs

classification hep-ph
keywords boundsmodelsscatteringsymmetry-constrainedunitarityactivityadditionamplitudes
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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Models with three Higgs doublets (3HDM) are the source of much recent activity, for they are key components of many solutions to the problems of the Standard Model; from extra sources of CP violation to Dark Matter candidates. We compute explicitly the theoretical bounds for all symmetry-constrained 3HDM arising from the perturbative unitarity of two-to-two scattering amplitudes. In addition, we propose a method based on principal minors that foregoes diagonalization and which is preferable in all models (not only 3HDM) dealing with large scattering matrices.

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Cited by 3 Pith papers

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

  1. Neutrino Masses and Dark Matter Stability in 3HDMs with Minimal Non-Abelian Discrete Symmetries

    hep-ph 2026-07 conditional novelty 6.0

    S3 and D4 3HDMs with an extra singlet RH neutrino realize discrete dark matter plus scoto-seesaw neutrino masses, fitting oscillation data under CP conservation.

  2. New features in the Z2xZ2 3HDM two component DM model

    hep-ph 2025-11 unverdicted novelty 5.0

    Explores vacuum structure and constraints in a Z2xZ2-symmetric 3HDM with two inert doublets, identifying new viable two-component DM regions with comparable relic contributions.

  3. Machine Learning in the 2HDM2S model for Dark Matter

    hep-ph 2025-09 unverdicted novelty 5.0

    A 2HDM extended by two real scalar singlets is scanned with evolutionary strategies to locate regions satisfying vacuum, unitarity, oblique-parameter, collider and dark-matter constraints.