An invisible axion model with controlled FCNCs at tree level

Abstract

We derive the necessary conditions to build a class of invisible axion models with Flavor Changing Neutral Currents at tree-level controlled by the fermion mixing matrices and present an explicit model implementation. A horizontal Peccei-Quinn symmetry provides a solution to the strong CP problem via the Peccei-Quinn mechanism and predicts a cold dark mater candidate, the invisible axion or familon. The smallness of active neutrino masses can be explained via a type I seesaw mechanism, providing a dynamical origin for the heavy seesaw scale. The possibility to avoid the domain wall problem stands as one of the most interesting features of the type of models considered. Experimental limits relying on the axion-photon coupling, astrophysical considerations and familon searches in rare kaon and muon decays are discussed.

7 pages, 1 table, 1 figure. Discussion extended, references added. Matching the journal version

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• Constraining the Axion-Photon Coupling with Massive Stars
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Cited by in corpus (18)

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• Lepton Flavor Violation with Displaced Vertices
• Accidental Peccei-Quinn Symmetry from Discrete Flavour Symmetry and Pati-Salam
• Flavor Violating Axions in the Early Universe
• A class of invisible axion models with FCNCs at tree level
• Flavor violating muon decay into an electron and a light gauge boson
• DFSZ Axion Couplings Revisited
• Structure Of Flavor Changing Goldstone Boson Interactions
• Model identification in ${\mu }^{-}\to e^{-}$ conversion with invisible boson emission using muonic atoms
• Leptoquark-induced CLFV decays with a light SM-singlet scalar
• Lepton flavor violation beyond the MSSM
• Two-loop contributions of axion-like particles to electromagnetic and chromomagnetic form factors
• Flavored Peccei-Quinn symmetries in the minimal $\nu$DFSZ model
• New Physics Searches at Kaon and Hyperon Factories
• Sweeping the pion chimney for axion-like particles with KOTO
• Non-universal Z' models with protected flavour-changing interactions