Considering the hierarchical structure of fermionic masses and the fermionic flavor mixing puzzles in the Standard Model, we propose to relate them by the see-saw mechanism, i.e. only the third generation of quarks and charged leptons achieves the masses at the tree level, the first two generations achieve masses through the mixings with the third generation, and the neutrinos achieve tiny Majorana masses by the so-called Type-I see-saw mechanism. This new picture at the fermion sector can explain simultaneously the flavor mixing puzzle and mass hierarchy puzzle in the SM. In addition, a flavor-dependent model (FDM) is proposed to realize the new mechanism, and observing the top quark rare decay processes , and the lepton flavor violation processes is effective to test the proposed FDM.

中文翻译：

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将费米子质量等级与风味混合联系起来的机制


考虑到费米子质量的层次结构和标准模型中的费米子风味混合难题，我们建议通过拉锯机制将它们联系起来，即只有第三代夸克和带电轻子在树级上实现质量，第一代两代中微子通过与第三代的混合获得质量，中微子通过所谓的I型拉锯机制获得微小的马约拉纳质量。费米子扇区的这张新图片可以同时解释 SM 中的风味混合难题和质量等级难题。此外，提出了风味相关模型（FDM）来实现新机制，并观察顶夸克稀有衰变过程和轻子风味破坏过程可以有效地测试所提出的FDM。