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arXiv 2106.01449hep-ph
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μ介子g-2和X型双希格斯粒子方案:高尺度效度的一些研究

Muon g-2 and a type-X two Higgs doublet scenario: some studies in high-scale validity

Atri Dey, Jayita Lahiri, Biswarup Mukhopadhyaya

摘要:

我们研究了X型两个希格斯双重态方案的高尺度有效性,该方案提供了对μ子$(g-2)$观测值的解释。这个区域允许赝标量物理状态,这是远远低于观察到的125 GeV标量的质量。在这种情况下,第二个中性标量粒子可以高于和低于125 GeV。参数空间中的容许区域是通过使用最新的数据μ子$(g-2)$,理论约束,如低尺度微扰和真空稳定性,也所有的实验约束,包括现有的LHC结果。除此之外,CP偶中性标量质量的上述顺序都包括在我们的基准研究中。双环重整化群方程被用来预测在高尺度的各种耦合的值,并在空间中的低尺度参数,其中保留微扰么正性以及真空稳定性高达各种尺度的跨越区域被确定。因此,我们的结论是,这样的情况下,虽然成功地解释了观测到的μ介子$(g-2)$,可以有效的能量尺度范围从$10^{4}$ GeV的普朗克尺度,从而打开了方向的思考,其紫外线完成。

英文摘要:

We study the high-scale validity of a Type-X two Higgs doublet scenario which provides an explanation of the observed value of muon $(g-2)$. This region admits of a pseudoscalar physical state, which is well below the observed 125-GeV scalar in mass. A second neutral scalar particle can be both above and below 125 GeV in such a scenario. Admissible regions in the parameter space are obtained by using the most recent data on muon $(g-2)$, theoretical constraints such as low-scale perturbativity and vacuum stability, and also all experimental constraints, including the available LHC results. Among other things, both the aforesaid orders of CP-even neutral scalar masses are included in our benchmark studies. Two-loop renormalisation group equations are used to predict the values of various couplings at high scales, and the regions in the space spanned by low-scale parameters, which retain perturbative unitarity as well as vacuum stability upto various scales are identified. We thus conclude that such a scenario, while successfully explaining the observed muon $(g-2)$, can be valid upto energy scales ranging from $10^{4}$ GeV to the Planck scale, thus opening up directions of thought on its ultraviolet completion.

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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