Modular Weights, U(1)'s and Mass Matrices
G. K. Leontaris, N. D. Tracas
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 μ eγ process close to the present experimental limits.
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