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arXiv 1504.02750hep-ph
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复合Higgs模型中自旋1共振的单圈效应

One-loop effects from spin-1 resonances in Composite Higgs models

Roberto Contino, Matteo Salvarezza

摘要:

本文计算了SO(5)/SO(4)复合Higgs模型中自旋1共振的电弱观测量的单圈修正。强动力学建模与一个有效的描述,包括南武-戈德斯通玻色子和最低躺自旋1共振。对相关操作人员进行了分类,包括超荷测量的保管破坏效应。1-圈贡献的共振提取在一个图解的方法,通过匹配的低能理论的南武-戈德斯通玻色子。我们发现,校正是数值上重要的参数空间的一个显着的分数,往往会削弱提供一个负移的S参数的界限。

英文摘要:

We compute the 1-loop correction to the electroweak observables from spin-1 resonances in SO(5)/SO(4) composite Higgs models. The strong dynamics is modeled with an effective description comprising the Nambu-Goldstone bosons and the lowest-lying spin-1 resonances. A classification is performed of the relevant operators including custodially-breaking effects from the gauging of hypercharge. The 1-loop contribution of the resonances is extracted in a diagrammatic approach by matching to the low-energy theory of Nambu-Goldstone bosons. We find that the correction is numerically important in a significant fraction of the parameter space and tends to weaken the bounds providing a negative shift to the S parameter.

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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