PT Journal
AU Celis, A
   Fuentes-Martin, J
   Serodio, H
TI An invisible axion model with controlled FCNCs at tree level
SO Physics Letters B
JI Phys. Lett. B
PY 2015
BP 117
EP 123
VL 741
DI 10.1016/j.physletb.2014.12.028
LA English
AB 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.
ER