Effective Aligned 2HDM with a DFSZ-like invisible axion

Abstract

We discuss the possibility of having a non-minimal scalar sector at the weak scale within the framework of invisible axion models. To frame our discussion we consider an extension of the Dine-Fischler-Srednicki-Zhitnitsky invisible axion model with two additional Higgs doublets blind under the Peccei-Quinn symmetry. Due to mixing effects among the scalar fields, it is possible to obtain a rich scalar sector at the weak scale in certain decoupling limits of the theory. In particular, this framework provides an ultraviolet completion of the so-called aligned two-Higgs-doublet model and solves the strong CP problem. The axion properties and the smallness of active neutrino masses are also discussed.

arXiv comment8 pages, 1 figure. Discussion improved, references added. Matching the journal version

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Cited by in corpus (15)

• Flavour alignment in multi-Higgs-doublet models
• An invisible axion model with controlled FCNCs at tree level
• $U(1)$ flavour symmetries as Peccei-Quinn symmetries
• Maximum Entropy Inferences on the Axion Mass in Models with Axion-Neutrino Interaction
• A class of invisible axion models with FCNCs at tree level
• Axion-Higgs interplay in the two Higgs-doublet model
• Updated global fit of the aligned two-Higgs-doublet model with heavy scalars
• Light scalars within the $\mathcal{C}\mathcal{P}$-conserving Aligned-two-Higgs-doublet model
• The Electric Dipole Moment of the electron in the decoupling limit of the aligned Two-Higgs Doublet Model
• Natural Quasi-Alignment with two Higgs Doublets and RGE Stability
• Spontaneous symmetry breaking in three-Higgs-doublet $S_3$-symmetric models
• Flavored Peccei-Quinn symmetries in the minimal $\nu$DFSZ model
• Flavour-changing top decays in the aligned two-Higgs-doublet model
• Detectability of the Phase Transition Gravitational Waves in the DFSZ axion Model
• Voyage Across the 2HDM Type-II with Magellan