arXiv 1401.35722014-01-15hep-ph

具有局域$U(1)_H$规范对称性的多Higgs二重态模型及其中微子物理

Multi-Higgs doublet models with local $U(1)_H$ gauge symmetry and neutrino physics therein

P. Ko, Yuji Omura, Chaehyun Yu

备注：: Contribution to the proceeding for the 2013 CETUP* Workshop on Neutrino and Astrophysics. arXiv admin note: text overlap with arXiv:1302.2195, arXiv:1204.4588
DOI：: 10.1063/1.4883433

摘要：

多希格斯偶线模型出现在标准模型的许多有趣的扩展中。但是它们遭受Higgs介导的味道改变中性电流（FCNC）问题，这是非常普遍的。在这次演讲中，我描述了这个问题可以解决或减轻，如果我们引入本地$U(1)_H$希格斯味规范对称性。作为例子，我描述了手征$U(1)_{H}$模型，其中右手向上型夸克也携带$U(1)_H$电荷，并讨论了顶部前后不对称（FBA）和$B\rightarrow D^{(*)} τν$难题。接下来，我描述了两个希格斯偶极子模型，通常的$Z_2$对称性实施到$U(1)_H$，并显示如何扩展的I型和II型模型。第二类模型的一个可能的扩展与Rosner的疏轻子$E_6$ $Z^{'}$模型具有相同的费米子含量，并简要讨论了该模型中的中微子扇区。

英文摘要：

Multi-Higgs doublet models appear in many interesting extensions of the standard model (SM). But they suffer from Higgs-mediated flavor changing neutral current (FCNC) problem which is very generic. In this talk, I describe that this problem can be resolved or mitigated if we introduce local $U(1)_H$ Higgs flavor gauge symmetry. As examples, I describe chiral $U(1)_{H}$ models where the right-handed up-type quarks also carry $U(1)_H$ charges and discuss the top forward-backward asymmetry (FBA) and $B\rightarrow D^{(*)} τν$ puzzle. Next I describe the two-Higgs doublet models where the usual $Z_2$ symmetry is implemented to $U(1)_H$ and show how the Type-I and Type-II models are extended. One possible extension of Type-II has the same fermion contents with the leptophobic $E_6$ $Z^{'}$ model by Rosner, and I discuss the neutrino sector in this model briefly.

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。

摘要：

英文摘要：

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