论文标题
Higgs玻色子精度测量的2HDM的比较研究
Comparative Studies of 2HDMs under the Higgs Boson Precision Measurements
论文作者
论文摘要
我们对拟议的HigGS工厂的标准模型（SM）Higgs可观察到的标准模型（SM）HIGGS可观察到的两种HIGGS双重模型（2HDM）进行了比较研究。我们基于2HDMS至一环级别的精确数据中的假设偏差来探索发现潜力。我们从$χ^2 $中发现了$5σ$可观察性，该$χ^2 $在未来的希格斯工厂的重要理论参数空间中。对于I型2HDM，具有$ \ cos（β-α）\ Lessim -0.1 $或$ \ cos（β-α）\ gtrsim 0.08 $的区域可在$5σ$级别上发现。对于其他三种类型的2HDM，$5σ$区域更大：$ | \ cos（β-α）| \ gtrsim 0.02 $ for $ \tanβ\ sim 1 $。在$ \tanβ$的小值和大值下，该区域$ \ cos（β-α）$进一步拧紧。我们研究了一个不同的2HDM理论可以在一个$ 95 \％$的置信度中以四个基准点作为案例研究的方式来区分一个不同的理论。我们表明，可以将其他类型2HDM的参数空间的很大一部分与目标模型的基准点区分开。循环校正的影响在某些参数区域很重要。
We perform comparative studies for four types of the two Higgs Doublet Models (2HDMs) under the precision measurements of the Standard Model (SM) Higgs observables at the proposed Higgs factories. We explore the discovery potential based on the hypothetical deviations in the precision data for the 2HDMs up to one-loop level. We find $5σ$ observability from the $χ^2$ fitting in a significant theory parameter space at future Higgs factories. For the Type-I 2HDM, regions with $\cos(β-α)\lesssim -0.1$ or $\cos(β-α)\gtrsim 0.08$ are discoverable at more than $5σ$ level. For the other three types of 2HDMs, the $5σ$ region is even bigger: $|\cos(β-α)|\gtrsim 0.02$ for $\tanβ\sim 1$. At small and large values of $\tanβ$, the region in $\cos(β-α)$ is further tightened. We examine the extent to which the different 2HDM theories may be distinguishable from one to the other at the $95\%$ Confidence Level with four benchmark points as case studies. We show that a large part of the parameter space of the other types of 2HDMs can be distinguished from the benchmark points of the target model. The impacts of loop corrections are found to be significant in certain parameter regions.
