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arXiv 1206.2623hep-ph
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关于复合双Higgs偶态模型

On Composite Two Higgs Doublet Models

Enrico Bertuzzo, Tirtha Sankar Ray, Hiroshi de Sandes, Carlos A. Savoy

摘要:

我们调查复合两个希格斯双重模型实现为伪戈德斯通模式,通过自发破缺的全球对称性,由于在TeV尺度的强动力学产生。本文对SU(5)→ SU(4)× U(1)和SU(5)× SU(4)两种可能的对称性破缺模式作了详细的比较研究。我们指出选择的标准模型费米子表示,可以减轻一些现象学的限制,重点对同时解决异常Zb \bar{b}耦合和希格斯介导的味道改变中性电流。我们还写下几个模型的动力学拉格朗日导致两个希格斯双重和确定的异常贡献的T参数。此外,我们描述了一个模型的基础上的破缺$SO(9)/SO(8)$,其中没有树级破缺的保管对称性,也讨论了可能的嵌入费米子场。

英文摘要:

We investigate composite two Higgs doublet models realized as pseudo Goldstone modes, generated through the spontaneous breaking of a global symmetry due to strong dynamic at the TeV scale. A detailed comparative survey of two possible symmetry breaking patterns, SU(5) -> SU(4) x U(1) and SU(5) x SU(4), is made. We point out choices for the Standard Model fermion representations that can alleviate some phenomenological constraints, with emphasis towards a simultaneous solution of anomalous Zb\bar{b} coupling and Higgs mediated Flavor Changing Neutral Currents. We also write down the kinetic lagrangian for several models leading to Two Higgs Doublets and identify the anomalous contributions to the T parameter. Moreover, we describe a model based on the breaking $SO(9)/SO(8)$ in which there is no tree-level breaking of custodial symmetry, discussing also the possible embeddings for the fermion fields.

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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