Aspects of a nonminimal conformal extension of the standard model
Aspects of a nonminimal conformal extension of the standard model
复制标题
标准模型的非最小共形扩展的各个方面
DOI：
10.1103/physrevd.94.055011
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发表时间：
2016-06
影响因子：
5
通讯作者：
Wu Feng
中科院分区：
文献类型：
--
作者：
Wu Feng
在本文中，我们研究了标准模型的保形扩展，其中标量扇区由标准模型希格斯双峰、实规范单峰和实 $SU(2{)}_{L}$ 三重态组成。重点关注在大型强子对撞机中发现的希格斯玻色子被识别为破坏尺度不变性的伪南部-戈德斯通玻色子的情况，讨论了该模型的各种理论和现象学特征。特别是，我们分析了新标量共振的衰减模式。我们还表明，当这种新标量共振的质量远低于 $WW$ 阈值时，由于单线态标量与系统其余部分的解耦，参数空间的自然区域会因与对称性增强相关的约束而减少。
In this article we investigate a conformal extension of the standard model in which the scalar sector consists of a standard model Higgs doublet, a real gauge singlet and a real $SU(2{)}_{L}$ triplet. Focusing on the scenario where the Higgs boson found at the LHC is identified as the pseudo-Nambu-Goldstone boson of broken scale invariance, various theoretical and phenomenological features of the model are discussed. In particular, we analyze the decay pattern of the new scalar resonance. We also show that when the mass of this new scalar resonance is far below the $WW$ threshold, the natural regions of the parameter space are reduced by a constraint associated with the symmetry enhancement due to the decoupling of the singlet scalar from the rest of the system.