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arXiv 0906.1816hep-ph
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具有精确暗物质宇称的小Higgs模型

A Little Higgs Model with Exact Dark Matter Parity

A. Freitas, P. Schwaller, D. Wyler

摘要:

基于Krohn和Yavin最近的一个想法,我们构造了一个内部宇称不被反常Wess-Zumino-Witten项破坏的小Higgs模型。该模型是Arkani-Hamed等人和Cheng和Low的“最小驼鹿”模型的修改。新的宇称防止了对斜电弱参数的大的修正,并导致了一个可行的暗物质候选者。它示出了如何完整的标准模型粒子的内容,包括夸克和轻子连同他们的汤川耦合,可以实现。自然参数的选择成功地实现了电弱对称性破缺,并与电弱精度约束保持一致。在TeV尺度下,我们预测会有丰富的新粒子谱,其中一些粒子在大型强子对撞机上有相当大的产生截面和显著的衰变特征。

英文摘要:

Based on a recent idea by Krohn and Yavin, we construct a little Higgs model with an internal parity that is not broken by anomalous Wess-Zumino-Witten terms. The model is a modification of the "minimal moose" models by Arkani-Hamed et al. and Cheng and Low. The new parity prevents large corrections to oblique electroweak parameters and leads to a viable dark matter candidate. It is shown how the complete Standard Model particle content, including quarks and leptons together with their Yukawa couplings, can be implemented. Successful electroweak symmetry breaking and consistency with electroweak precision constraints is achieved for natural paramters choices. A rich spectrum of new particles is predicted at the TeV scale, some of which have sizable production cross sections and striking decay signatures at the LHC.

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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