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arXiv 2102.02823hep-ph
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揭开高尺度希格斯单线态模型

Uncovering the High Scale Higgs Singlet Model

Sally Dawson, Pier Paolo Giardino, Samuel Homiller

摘要:

标量单重态模型扩展了标准模型,增加了一个新的规范单重态标量。我们重新审视新标量的限制,从斜参数拟合和从一个全球性的适合精密电弱观测和我们的结果提出了解析表达式。对于新的标量比弱标度重得多的情况下,我们映射到六维标准模型有效场论(SMEFT)的模型,并审查允许的参数空间从幺正性的考虑和要求,电弱最小是稳定的。一个全球性的适合精密电弱数据,以及LHC观测值,是用来约束高尺度单态模型的参数,我们确定的数值效果进行匹配在树级和1-循环。

英文摘要:

The scalar singlet model extends the Standard Model with the addition of a new gauge singlet scalar. We re-examine the limits on the new scalar from oblique parameter fits and from a global fit to precision electroweak observables and present analytic expressions for our results. For the case when the new scalar is much heavier than the weak scale, we map the model onto the dimension-six Standard Model effective field theory (SMEFT) and review the allowed parameter space from unitarity considerations and from the requirement that the electroweak minimum be stable. A global fit to precision electroweak data, along with LHC observables, is used to constrain the parameters of the high scale singlet model and we determine the numerical effects of performing the matching at both tree level and 1-loop.

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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