Texture of fermion mass matrices in partially unified theories
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We investigate the texture of fermion mass matrices in theories with partial unification [for example, (Formula presented)] at a scale (Formula presented) Starting with the low energy values of the masses and the mixing angles, we find only two viable textures with at most four texture zeros. One of these corresponds to a somewhat modified Fritzsch texture. A theoretical derivation of these textures leads to new interesting relations among the masses and the mixing angles. 1998 The American Physical Society.