Predictions of the Higgs Mass and the Weak Mixing Angle in the 6D Gauge-Higgs Unification
Predictions of the Higgs Mass and the Weak Mixing Angle in the 6D Gauge-Higgs Unification
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DOI：
10.7566/jpsj.85.074101
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发表时间：
2015-09
影响因子：
1.7
通讯作者：
K. Hasegawa;C. Lim;N. Maru
中科院分区：
文献类型：
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作者：
K. Hasegawa;C. Lim;N. Maru
在具有多个额外空间的标准-希格斯统一中，希格斯自耦合的数量级为g2，希格斯玻色子预计是轻的，与大型强子对撞机的结果一致。当量具组简单时，弱混合角也是可预测的。我们解决了一个问题，即在六维时空中是否存在一个标准-希格斯统一模型，该模型成功地预测了希格斯玻色子和弱规范玻色子的质量比。首先，我们利用一个有用的公式，给出了弱混合角sin2θW = 1/4的真实预测条件的一般论证，并发现最小SU(3)规范群的三重态和六重态表示导致了真实的预测。关于希格斯粒子的质量，我们注意到，在只有一个希格斯双重态的模型中，预测的希格斯粒子质量总是相同的：MH = 2MW。然而，将我们的讨论扩展到具有两个希格斯双重态的模型，情况发生了变化：我们得到了一个有趣的预测，在最小的时候MH≤2MW。
In the gauge-Higgs unification with multiple extra spaces, the Higgs self-coupling is on the order of g2 and the Higgs boson is predicted to be light, being consistent with the LHC results. When the gauge group is simple, the weak mixing angle is also predictable. We address a question on whether there exists a model of gauge-Higgs unification in six-dimensional space-time, which successfully predicts the mass ratios of the Higgs boson and weak gauge bosons. First, using a useful formula, we give a general argument on the condition for obtaining a realistic prediction of the weak mixing angle sin2θW = 1/4, and find that triplet and sextet representations of the minimal SU(3) gauge group lead to the realistic prediction. Concerning the Higgs mass, we notice that, in the models with one Higgs doublet, the predicted Higgs mass is always the same: MH = 2MW. However, by extending our discussion to the models with two Higgs doublets, the situation changes: we obtain an interesting prediction MH ≤ 2MW at the lea...