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Triangular Textures for Quark Mass Matrices

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arxiv hep-ph/9907314 v1 pith:RRJ7QVSD submitted 1999-07-12 hep-ph

Triangular Textures for Quark Mass Matrices

classification hep-ph
keywords massquarkmatricesmatrixtriangularelementformtextures
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The hierarchical quark masses and small mixing angles are shown to lead to a simple triangular form for the U- and D-type quark mass matrices. In the basis where one of the matrices is diagonal, each matrix element of the other is, to a good approximation, the product of a quark mass and a CKM matrix element. The physical content of a general mass matrix can be easily deciphered in its triangular form. This parameterization could serve as a useful starting point for model building. Examples of mass textures are analyzed using this method.

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    hep-ph 2026-07 conditional novelty 6.0

    A systematic scan of all nine-link Yukawa textures shows the quark CP phase clusters at pi/8, pi/4, pi/2, 3pi/8, and yields precise, falsifiable predictions for the CKM unitarity triangle angles.