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arXiv 1105.4622hep-ph
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轻子和夸克的水平对称性

A Horizontal Symmetry for Leptons and Quarks

C. S. Lam

摘要:

利用U(1)\x SO(3)下的一般Valon势不变量来确定轻子的水平对称性是SO(3)的$A_4$、$S_4$还是其它有限子群.势中的Valons被指定为SO(3)自旋0,1和2,因为它们是唯一可以耦合到水平自旋为1的三代费米子的。这个电势导致分解成具有三种不同对称性的三种可能的相。相I具有适合轻子混合的$A_4$对称性。相II具有SO(2)对称性,相III具有$Z_2\x Z_2$对称性,两者都能够描述夸克的Cabibbo混合。第二阶段必须拒绝唯象的理由,但第三阶段产生块对角和层次质量矩阵适合夸克。不存在其他非阿贝尔对称性,如$S_4$。

英文摘要:

A generic valon potential invariant under U(1)\x SO(3) is used to determine whether the horizontal symmetry of leptons is $A_4$, $S_4$, or some other finite subgroups of SO(3). Valons in the potential are assigned SO(3) spins 0, 1, and 2, for these are the only ones that can couple to the three generation of fermions with horizontal spin 1. This potential causes a breakdown into three possible phases with three different symmetries. Phase I has an $A_4$ symmetry suitable for leptonic mixing. Phase II has an SO(2) symmetry and phase III has a $Z_2\x Z_2$ symmetry, both capable of describing Cabibbo mixing of quarks. Phase II has to be rejected on phenomenological ground, but phase III yields block diagonal and hierarchical mass matrices appropriate for quarks. No other non-abelian symmetry such as $S_4$ is present.

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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