Higgs potential in gauge-Higgs unification with a flat extra dimension
Higgs potential in gauge-Higgs unification with a flat extra dimension
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规范中的希格斯势-具有平坦额外维度的希格斯统一
DOI：
10.1016/j.physletb.2021.136637
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发表时间：
2021
影响因子：
4.4
通讯作者：
Suzuki Shin
中科院分区：
文献类型：
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作者：
Kakizaki Mitsuru;Suzuki Shin
我们分析了具有平坦额外维度的规范-希格斯统一中希格斯势的结构。作为具体模型，我们首先考虑将标准模型希格斯双峰嵌入到五维洛伦兹对称性松弛的高维 S U (3) w 规范多重态中的情况。在这个洛伦兹破坏的 S U (3) w 模型中，当致密化尺度大于实验下限（大约 5 TeV）时，所得到的三重希格斯玻色子耦合与其 SM 预测的偏差小于 10%。接下来，我们检查其他具有平坦额外维度的类似规范希格斯统一模型中的希格斯势。指出即使在这样的模型中，随着额外维度的致密化尺度的增加，真空周围的希格斯势的形状也很快接近具有一个希格斯双峰的最小希格斯势的形状。在计划的轻子对撞机中，三重希格斯玻色子耦合的可观察到的偏差将需要对这种规范-希格斯统一模型进行重大扩展。
We analyze the structure of the Higgs potential in gauge-Higgs unification with a flat extra dimension. As a concrete model, we first consider the cases where the Standard Model Higgs doublet is embedded into a higher-dimensional S U (3) w gauge multiplet with five-dimensional Lorentz symmetry relaxed. In this S U (3) w model with Lorentz violation, the deviation of the resulting triple Higgs boson coupling from its SM prediction is shown to be less than 10% when the compactification scale is larger than the experimental lower bound, which is around 5 TeV. Next, we examine the Higgs potential in other similar gauge-Higgs unification models with a flat extra dimension. It is pointed out that even in such models the shape of the Higgs potential around the vacuum quickly approaches that of the minimal Higgs potential with one Higgs doublet as the compactification scale of the extra dimension increases. An observable deviation of the triple Higgs boson coupling at planned lepton colliders will necessitate significant extensions of such gauge-Higgs unification models.