$$A_4$$ A 4 modular invariance and the strong CP problem

Abstract We present simple effective theory of quark masses, mixing and CP violation with level $$N=3$$ N = 3 ( $$A_4$$ A 4 ) modular symmetry, which provides solution to the strong CP problem without the need for an axion. The vanishing of the strong CP-violating phase $${\bar{\theta }}$$ θ ¯ is en...

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Bibliographic Details
Main Authors: S. T. Petcov, M. Tanimoto
Format: Article
Language:English
Published: SpringerOpen 2024-09-01
Series:European Physical Journal C: Particles and Fields
Online Access:https://doi.org/10.1140/epjc/s10052-024-13272-w
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