https://doi.org/10.1140/epjc/s10052-021-09410-3
Regular Article - Theoretical Physics
Flavored axion in the UV-complete Froggatt–Nielsen models
Instituto de Física, Universidad Nacional Autónoma de México, A.P. 20-364, 01000, Mexico City, Mexico
Received:
15
February
2021
Accepted:
5
July
2021
Published online:
13
July
2021
We propose UV-completions of Froggatt–Nielsen–Peccei–Quinn models of fermion masses and mixings with flavored axions, by incorporating heavy fields. Here, the U(1) Froggatt–Nielsen symmetry is identified with the Peccei–Quinn symmetry to solve the strong CP problem along with the mass hierarchies of the Standard Model fermions. We take into account leading order contributions to the fermion mass matrices giving rise to Nearest-Neighbour-Interaction structure in the quark sector and 
texture in the neutrino sector. A comprehensive numerical analysis has been performed for the fermion mass matrices. Subsequently, we investigate the resulting axion flavor violating couplings and the axion-photon coupling arising from the model.
© The Author(s) 2021
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