The rephasing freedom and the NNI form of quark mass matrices

Abstract

For three generations of quarks, we show that one of quark mass matrices can be transformed into either a Fritzsch form or a Branco-Silva-Marcos form, while the other is kept in the NNI basis. In these bases, quark mass matrices are determined unambiguously once quark masses and the CKM mixing are given.

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