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Modular Weights, U(1)'s and Mass Matrices

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arxiv hep-ph/9709510 v2 pith:LXAR5PZG submitted 1997-09-30 hep-ph

classification hep-ph
keywords matricesmassmodularweightsaugmentedbranchingchargesclose
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abstract

We derive the scalar mass matrices in effective supergravity models augmented by a $U(1)_F$ family symmetry. Simple relations between $U(1)_F$ charges and modular weights of the superfields are derived and used to express the matrices with a minimum number of parameters. The model predicts a branching ratio for the $\mu\to e\gamma$ process close to the present experimental limits.

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  1. Neutrino Mass Predictions with an AI-based Algorithm under $A_4$ Modular Symmetry

    hep-ph 2025-08 reject novelty 3.0 of 10

    An A4 modular linear-seesaw neutrino model is fitted with the ILA optimizer, and the fitted parameters agree with oscillation and cosmological bounds.

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