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arXiv 1402.0233hep-phhep-lat
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基本复合(戈德斯通)希格斯动力学

Fundamental Composite (Goldstone) Higgs Dynamics

G. Cacciapaglia, F. Sannino

摘要:

我们提供了一个统一的描述,无论是在有效的和基本的拉格朗日水平,复合希格斯动力学模型的希格斯粒子本身可以出现,这取决于电弱对称性嵌入的方式,无论是作为一个伪戈德斯通玻色子或作为一个大规模的激发的凝聚。我们表明,在一般情况下,这些国家混合与电弱物理和现象学的影响。我们的研究结果将有助于澄清的主要差异,相似之处,优点和缺点的不同方式,人们可以自然地实现复合性质的标准模型的电弱部门。我们将根据支持味对称破缺模式SU(4)/Sp(4)$\sim$ SO(6)/SO(5)的基本强耦合规范理论来分析最小的潜在实现。最小的基本描述由SU(2)规范理论组成,其中两个狄拉克费米子根据规范群的基本表示进行变换。这个最小的选择使我们能够使用最近的第一原理晶格结果,使第一次预测的大规模频谱模型的复合(戈德斯通)希格斯动力学。这些结果对于指导在大型强子对撞机上寻找新物理学具有最重要的意义。

英文摘要:

We provide a unified description, both at the effective and fundamental Lagrangian level, of models of composite Higgs dynamics where the Higgs itself can emerge, depending on the way the electroweak symmetry is embedded, either as a pseudo-Goldstone boson or as a massive excitation of the condensate. We show that, in general, these states mix with repercussions on the electroweak physics and phenomenology. Our results will help clarify the main differences, similarities, benefits and shortcomings of the different ways one can naturally realize a composite nature of the electroweak sector of the Standard Model. We will analyze the minimal underlying realization in terms of fundamental strongly coupled gauge theories supporting the flavor symmetry breaking pattern SU(4)/Sp(4) $\sim$ SO(6)/SO(5). The most minimal fundamental description consists of an SU(2) gauge theory with two Dirac fermions transforming according to the fundamental representation of the gauge group. This minimal choice enables us to use recent first principle lattice results to make the first predictions for the massive spectrum for models of composite (Goldstone) Higgs dynamics. These results are of the upmost relevance to guide searches of new physics at the Large Hadron Collider.

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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