Where does flavour mixing come from
Where does flavour mixing come from
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DOI：
10.1016/s0370-2693(99)00126-4
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发表时间：
1998-12
影响因子：
4.4
通讯作者：
J. Chkareuli;C. Froggatt
中科院分区：
文献类型：
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作者：
J. Chkareuli;C. Froggatt
我们认为，味混合，无论是在夸克和带电轻子部门，基本上是由最轻的家庭质量生成机制。因此，在手征对称极限下，当上夸克和下夸克的质量为零时，所有的夸克混合角都为零。这种机制不依赖于夸克-轻子族的数量，也不依赖于任何“垂直”对称结构，如大统一理论中那样将夸克和轻子统一在一个族中。再加上最大CP破坏的假设，该模型导致了一个完全预测的所有CKM矩阵元素的夸克质量。中微子质量和振荡的一些影响进行了简要讨论。
We argue that flavour mixing, both in the quark and charged lepton sector, is basically determined by the lightest family mass generation mechanism. So, in the chiral symmetry limit when the up and down quark masses vanish, all the quark mixing angles vanish. This mechanism is not dependent on the number of quark-lepton families nor on any “vertical” symmetry structure, unifying quarks and leptons inside a family as in Grand Unified Theories. Together with a hypothesis of maximal CP violation, the model leads to a completely predictive ansatz for all the CKM matrix elements in terms of the quark masses. Some implications for neutrino masses and oscillations are briefly discussed.