论文标题
对看不见的希格斯玻色子衰变的敏感性
Sensitivity to invisible Higgs boson decays at CLIC
论文作者
论文摘要
我们研究了在Clic运行380 GEV和1.5 TEV时测量不可见的Higgs玻色子衰变的可能性。该分析基于使用Delphes的CLIC检测器响应的Whizard事件生成和快速模拟。我们考虑了$ e^+e^ - $背景过程，但还考虑了相关的$γγ$和$γe^\ pm $互动。由两步分析组成的方法用于优化信号和背景过程之间的分离。首先，应用了一组预选切割；然后，采用多元分析方法来优化观测的重要性。我们估计了125 GEV Higgs Boson的无形衰减的预期限制，以及假设其质量的函数，假设其隐形衰减，则构成了额外的中性Higgs样标量的横截面限制。然后，在矢量 - 弗里米亚暗物质模型的框架中解释了提取的模型无关的分支比和横截面限制，以将smlike Higss boson与“暗区域”的新标量之间的混合角度设置限制。
We studied the possibility of measuring invisible Higgs boson decays at CLIC running at 380 GeV and 1.5 TeV. The analysis is based on the WHIZARD event generation and fast simulation of the CLIC detector response with DELPHES. We considered $e^+e^-$ background processes but also relevant $γγ$ and $γe^\pm$ interactions. The approach consisting of a two step analysis was used to optimize separation between signal and background processes. First, a set of preselection cuts was applied; then, multivariate analysis methods were employed to optimise the significance of observations. We estimated the expected limits on the invisible decays of the 125 GeV Higgs boson, as well as the cross section limits for production of an additional neutral Higgs-like scalar, assuming its invisible decays, as a function of its mass. Extracted model-independent branching ratio and cross section limits were then interpreted in the framework of the vector-fermion dark matter model to set limits on the mixing angle between the SM-like Higss boson and the new scalar of the "dark sector".
