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arXiv 1507.00328hep-ph
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味不变量的重整化群演化

Renormalization Group Evolution of Flavour Invariants

Thorsten Feldmann, Thomas Mannel, Steffen Schwertfeger

摘要:

标准模型中的费米子谱在决定费米子质量的汤川矩阵的本征值之间表现出层次结构,在描述不同费米子世代之间弱跃迁的混合矩阵中也表现出一定的层次模式。SM风味结构的一个独立的基础的描述,可以在一个完整的风味不变。在本文中,我们构造了一个方便的不变量集,并讨论了重整化群方程的一般形式。我们还讨论了利用层次结构中的Yukwawa耦合和混合,这是目前在SM或其最小味违反扩展所产生的简化。

英文摘要:

The fermion spectrum in the Standard Model (SM) exhibits hierarchical structures between the eigenvalues of the Yukawa matrices which determine the fermion masses, as well as certain hierarchical patterns in the mixing matrix that describes weak transitions between different fermion generations. A basis-independent description of the SM flavour structure can be given in terms of a complete set of flavour invariants. In this paper, we construct a convenient set of such invariants, and discuss the general form of the renormalization-group equations. We also discuss the simplifications that arise from exploiting hierarchies in Yukwawa couplings and mixings which are present in the SM or its minimal-flavour violating extensions.

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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