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arXiv 1704.06993hep-ph
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味的离散魅力与CP破坏

The discrete charm of flavour and CP violation

G. C. Branco, M. N. Rebelo

摘要:

我们指出,在标准模型(SM)中,没有解释为什么$|V_{23}|^2 + |V_{13}|^2$是$10^{-3}$阶的。一个框架来解释这个小的混合,涉及到矢量夸克的引入。引入对称性,使得在第一阶段$V_{CKM} = 1\>\!\!\!\mathrm{I}$和只有第三代夸克获得质量。结果表明,当考虑矢量类夸克的相互作用时,可以得到真实的夸克质量谱和正确的$V_{CKM}$矩阵。

英文摘要:

We point out that in the Standard Model (SM) there is no explanation why $|V_{23}|^2 + |V_{13}|^2$ is of order $10^{-3}$. A framework is described for explaining this small mixing, involving the introduction of vector-like quarks. A symmetry is introduced so that at a first stage $V_{CKM} = 1\>\!\!\!\mathrm{I}$ and only the third generation of quarks acquires a mass. It is shown that when interactions of vector-like quarks are taken into account a realistic quark mass spectrum is generated together with a correct $V_{CKM}$ matrix.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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