Effective potential and universality in GUT-inspired gauge-Higgs unification
Effective potential and universality in GUT-inspired gauge-Higgs unification
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DOI：
10.1103/physrevd.102.015005
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发表时间：
2020-02
影响因子：
5
通讯作者：
Shuichiro Funatsu;H. Hatanaka;Y. Hosotani;Yuta Orikasa;Naoki Yamatsu
中科院分区：
文献类型：
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作者：
Shuichiro Funatsu;H. Hatanaka;Y. Hosotani;Yuta Orikasa;Naoki Yamatsu
在GUT启发的$SO(5)\times U(1) \times SU(3)$规范-希格斯统一中，对第五维Aharonov-Bohm相$\theta_H$的有效势进行了评估，表明动态电弱对称性破缺发生在$\theta_H \not= 0$， 4D希格斯玻色子质量125 $\,$ GeV在量子水平上产生。发现希格斯玻色子的三次和四次自耦合$(\lambda_3, \lambda_4)$满足普遍关系，即它们仅由$\theta_H$以高精度确定，而不考虑模型中其他参数的值。对于$\theta_H=0.1$ ($0.15$), $\lambda_3$和$\lambda_4$比标准模型中的值小7.7% (8.1%) and 30% (32%), respectively.
The effective potential for the Aharonov-Bohm phase $\theta_H$ in the fifth dimension in GUT inspired $SO(5)\times U(1) \times SU(3)$ gauge-Higgs unification is evaluated to show that dynamical electroweak symmetry breaking takes place with $\theta_H \not= 0$, the 4D Higgs boson mass 125$\,$GeV being generated at the quantum level. The cubic and quartic self-couplings $(\lambda_3, \lambda_4)$ of the Higgs boson are found to satisfy universal relations, i.e. they are determined, to high accuracy, solely by $\theta_H$, irrespective of values of other parameters in the model. For $\theta_H=0.1$ ($0.15$), $\lambda_3$ and $\lambda_4$ are smaller than those in the standard model by 7.7% (8.1%) and 30% (32%), respectively.