Radiative corrections to the Higgs boson couplings in the model with an additional real singlet scalar field
Radiative corrections to the Higgs boson couplings in the model with an additional real singlet scalar field
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DOI：
10.1016/j.nuclphysb.2016.04.005
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发表时间：
2015-11
期刊：
影响因子：
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通讯作者：
S. Kanemura;Mariko Kikuchi;K. Yagyu
中科院分区：
文献类型：
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作者：
S. Kanemura;Mariko Kikuchi;K. Yagyu
在一个附加的单重态真实的标量场模型中，我们在单圈水平上计算了重整化的希格斯玻色子与规范玻色子和费米子的耦合。这些耦合常数可能偏离标准模型的预测，由于树级混合效应和额外的中性标量玻色子的单圈贡献。在微扰么正性和真空稳定性的理论约束下，以及在避免错误真空的条件下，我们研究了它们是如何有意义的。此外，通过与I型双Higgs二重态模型的预测结果进行比较，我们用数值方法证明了在未来的对撞机实验中，如何利用Higgs玻色子耦合的精确测量来区分和识别单重态扩展模型。
We calculate renormalized Higgs boson couplings with gauge bosons and fermions at the one-loop level in the model with an additional isospin singlet real scalar field. These coupling constants can deviate from the predictions in the standard model due to tree-level mixing effects and one-loop contributions of the extra neutral scalar boson. We investigate how they can be significant under the theoretical constraints from perturbative unitarity and vacuum stability and also the condition of avoiding the wrong vacuum. Furthermore, comparing with the predictions in the Type I two Higgs doublet model, we numerically demonstrate how the singlet extension model can be distinguished and identified by using precision measurements of the Higgs boson couplings at future collider experiments.