An attempt has been made to carry out a detailed analysis of quark mass matrices having structure beyond the minimal texture. In particular, keeping in mind, precision measurements of CKM parameters as well as refinements in the ranges of light quark masses, we have examined the viability of all possible combinations of hermitian texture 5 zero quark mass matrices. Interestingly, one finds that all these possibilities are now excluded by the present quark mixing data, thereby, having important implications for model building.

中文翻译：

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在精密测量时代超越夸克质量矩阵的最小纹理

已尝试对具有超出最小纹理结构的夸克质量矩阵进行详细分析。特别是，记住 CKM 参数的精确测量以及轻夸克质量范围的改进，我们已经检查了厄米结构 5 零夸克质量矩阵的所有可能组合的可行性。有趣的是，人们发现所有这些可能性现在都被目前的夸克混合数据排除了，因此对模型构建具有重要意义。