Extending the limits of Higgs effective theory
Extending the limits of Higgs effective theory
复制标题
扩展希格斯有效理论的极限
DOI：
10.1103/physrevd.94.055032
复制
发表时间：
2016
影响因子：
5
通讯作者：
T. Plehn
中科院分区：
文献类型：
--
作者：
A. Biekotter;J. Brehmer;T. Plehn
基于矢量三重态模型，研究了6维算子在描述大型强子对撞机希格斯运动时可能出现的失效。首先，我们证明了包括6维贡献的平方可以显著提高完整模型和6维近似之间的一致性，无论是在相关的希格斯产生还是在弱玻色子聚变希格斯产生中。其次，我们测试了一个带有额外重标量的简化模型如何提高关键LHC观测值的一致性。在弱玻色子核聚变中，我们发现在大能量下与虚拟相关的可观测值有所改善，但代价是干涉模式和角相关的相当大的偏差。
Based on a vector triplet model we study a possible failure of dimension-6 operators in describing LHC Higgs kinematics. First, we illustrate that including dimension-6 contributions squared can significantly improve the agreement between the full model and the dimension-6 approximation, both in associated Higgs production and in weak-boson-fusion Higgs production. Second, we test how a simplified model with an additional heavy scalar could improve the agreement in critical LHC observables. In weak boson fusion we find an improvement for virtuality-related observables at large energies, but at the cost of sizeable deviations in interference patterns and angular correlations.