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arXiv 1109.0995hep-ph
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Z(12)对称下具有最大CP破坏的CKM矩阵

The CKM matrix with maximal CP violation from Z(12) symmetry

Jihn E. Kim

摘要:

最近精确测定的CKM参数,包括最大CP相位90度,使我们能够写出的上型和下型夸克质量矩阵的高精度。夸克质量结构(不是质量本征值)中最轻的元素(uu元素)的幂是lambda**6,其中lambda=sin(卡比波角)。360度除以整数的CP相位暗示了离散对称性。由于λ **6是夸克质量矩阵元中的最高幂,因此我们提出了一种可能性,即最大CP相位90度可以从超对称Z(12)离散对称模型获得。

英文摘要:

The recent accurate determination of the CKM parameters including the maximal CP phase 90 degrees enables us to write down the up-type and down-type quark mass matrices to a high degree of accuracy. The lightest element(the uu element) of the quark mass texture (not the mass eigenvalue) has a power lambda**6 where lambda=sin(Cabibbo angle). The CP phase of 360 degrees divided by an integer hints a discrete symmetry. Since lambda**6 is the highest power among the quark mass matrix elements, we present as an example a possibility that the maximal CP phase 90 degrees is obtainable from a supersymmetric Z(12) discrete symmetry model.

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