I型2HD中$e^+ e^- \rightarrow hhf\overline{f}$（$f\neq t$）的Yukawa耦合的标度因子与截面之间的相关性
Correlation between the scaling factor of the yukawa coupling and cross section for the $e^+ e^- \rightarrow hhf\overline{f}$ ($f\neq t$) in type-I 2HD
摘要：
本研究的目的是相关的标准模型（SM）的标度因子，如希格斯玻色子和截面比的过程$e^+ e^- \rightarrow hhf\overline{f}$，其中$e^+ e^- \rightarrow hhf\overline{f}$，规范化SM预测的类型I的两个希格斯双重模型。所有计算均在$\sqrt{s}=500$ GeV和$1 \leq \tanβ \leq 30$下进行，质量分别为$m_H = m_A = m_{H^\pm} = 300GeV$和$m_H=300$ GeV、$m_A=m_{H^\pm}=500$ GeV。工作方案是通过采取没有对齐限制，即$s_{β-α}= 0.98$和$s_{β-α}= 0.99,$ $0.995$，这给出了增强的截面，特别是几倍大于SM的预测，由于额外的重中性希格斯玻色子的共振影响。这表明截面的增强发生在离开对准时，$s_{β-α}=1$，在此所有耦合到矢量玻色子和费米子的希格斯粒子在树水平上具有与SM中相同的值。与$s_{β-α}= 0.99,$ $0 .995$相比，在$s_{β-α}= 0.98$处获得较大的增强因子值。此外，对于当$m_H=300$ GeV，$m_A=m_{H^\pm}=500$ GeV。还研究了具有$\tanβ$的比例因子的行为，这表明对于较大的$\tanβ$值，比例因子变得等于$s_{β-α}$。最后，通过考虑微扰么正性、真空稳定性和电弱斜参数等实验和理论约束，得到了令人信服的关联式。
英文摘要：
The objective of this study is to correlate the scaling factor of the Standard Model (SM) like Higgs boson and the cross section ratio of the process $e^+ e^- \rightarrow hhf\overline{f}$ where $f\neq t$, normalized to SM predictions in the type I of the Two Higgs Doublet Model. All calculations have been performed at $\sqrt{s}=500$ GeV and $1 \leq \tanβ \leq 30$ for masses $m_H = m_A = m_{H^\pm} = 300GeV$ and $m_H=300$ GeV, $m_A=m_{H^\pm}=500$ GeV. The working scenario is by taking without alignment limit, that is $s_{β-α}= 0.98$ and $s_{β-α}= 0.99,$ $0.995$, which gives the enhancement in the cross section, particularly a few times greater than the predictions of the SM due to resonant-impacts of the additional heavy neutral Higgs bosons. This shows that enhancement in cross section occurs on leaving the alignment i.e., $s_{β-α}=1$, at which all the higgs that couple to vector bosons and fermions have the same values as in SM at tree level. A large value of enhancement factor is obtained at $s_{β-α}= 0.98$ compared to $s_{β-α}= 0.99,$ $0 .995$. Furthermore, the decrease in the enhancement factor is observed for the case when $m_H=300$ GeV, $m_A=m_{H^\pm}=500$ GeV. The behavior of the scaling factor with $\tanβ$ is also studied, which shows that for large values of $\tanβ$, the scaling factor becomes equal to $s_{β-α}$. Finally a convincing correlation is achieved by taking into account, the experimental and theoretical constraints e.g, perturbative unitarity, vacuum stability and electroweak oblique parameters.
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