Speaker
Junichiro Kawamura
(IBS-CTPU)
Description
We proposed models in which the hierarchical structure of the quark and lepton masses and mixing are explained by the $S_4^\prime$ modular flavor symmetry. This is the first explicit example which realizes all of the mass and mixing hierarchies from a single modular symmetry. The hierarchies are predominantly explained by the Froggatt-Nielsen mechanism due to the residual $Z_4^T$ symmetry, where the modulus is stabilized near the fixed point $\sim i\infty$. The numerical factors from canonical normalizations and modular forms also give important effects to explain the observed patterns with $\mathcal{O}(1)$ parameters.
| Secondary category for the parallel session (optional) | Flavor Physics |
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Primary author
Junichiro Kawamura
(IBS-CTPU)
