arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1012.2874hep-ph
收藏

含费米子的双Higgs二重态模型的Abel对称性

Abelian symmetries in the two-Higgs-doublet model with fermions

P. M. Ferreira, Joao P. Silva

摘要:

我们分类所有可能的实现阿贝尔对称性的两希格斯偶模型与费米子。我们确定这些对称性是一致的非零夸克质量和CKM矩阵,这是不是块对角。我们的分析将我们从过多的可能性下降到246个相关案例,只需要34个不同的矩阵形式。我们表明,应用Z_n与n \geq 4的标量部门导致一个连续的U(1)对称性在整个拉格朗日。最后,我们解决自发的CP破坏和自然抑制的味道改变中性电流的可能性。我们解释了为什么我们的工作是相关的,即使是非阿贝尔对称性。

英文摘要:

We classify all possible implementations of an abelian symmetry in the two-Higgs-doublet model with fermions. We identify those symmetries which are consistent with non-vanishing quark masses and a CKM matrix which is not block-diagonal. Our analysis takes us from a plethora of possibilities down to 246 relevant cases, requiring only 34 distinct matrix forms. We show that applying Z_n with n \geq 4 to the scalar sector leads to a continuous U(1) symmetry in the whole Lagrangian. Finally, we address the possibilities of spontaneous CP violation and of natural suppression of the flavour changing neutral currents. We explain why our work is relevant even for non-abelian symmetries.

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。

↑