论文标题
QCD校正为$ e^+e^ - \ rightarrow h^{\ pm} w^{\ mp} $ in Type-i thdm in Electron potitron Colliders
QCD Corrections to $e^+e^- \rightarrow H^{\pm}W^{\mp}$ in Type-I THDM at Electron Positron Colliders
论文作者
论文摘要
我们详细研究了在I型I Type-twiggs-Doublet型号（THDM）框架内，在Electron-Positron Colliders上与$ W $ Boson相关的带电的Higgs生产。我们在LO上计算集成的横截面，并分析横截面对THDM参数的依赖性和Higgs扇区输入参数的基准方案中的碰撞能量。数值结果表明，集成的横截面对带电的希格斯质量很敏感，尤其是在$ m_ {h^{h^{\ pm}} \ simeq 184〜 {\ rm gev} $ $ 500〜 {\ rm gev} $ gev} $ $ e^+e^+collide的$ collisted $ colledement的$ closeption $ collise的$ closeption $ collise $ collise的$ closements $ $ \tanβ$区域。横截面的碰撞能量分布中的峰值来自环积积分的共振，其位置随着$ m_ {h^{\ pm}} $的增量而向低碰撞能量移动。我们还研究了对集成的横截面和带电的Higgs玻色子的角度分布的两环NLO QCD校正，并发现QCD相对校正也对带电的希格斯质量敏感，并且很大程度上取决于最终状态相空间。对于$ \tanβ= 2 $，QCD相对校正的$ 500〜 {\ rm Gev} $ $ e^+e^ - $ collider在$ [ - 10 \％，\，11 \％] $ as $ m_ {h^{h^{\ pm}} $中的范围内变化为$ 150 $ 150 $ ge，
We investigate in detail the charged Higgs production associated with a $W$ boson at electron-positron colliders within the framework of the Type-I two-Higgs-doublet model (THDM). We calculate the integrated cross section at the LO and analyze the dependence of the cross section on the THDM parameters and the colliding energy in a benchmark scenario of the input parameters of Higgs sector. The numerical results show that the integrated cross section is sensitive to the charged Higgs mass, especially in the vicinity of $m_{H^{\pm}} \simeq 184~ {\rm GeV}$ at a $500~ {\rm GeV}$ $e^+e^-$ collider, and decreases consistently as the increment of $\tanβ$ in the low $\tanβ$ region. The peak in the colliding energy distribution of the cross section arises from the resonance of loop integrals and its position moves towards low colliding energy as the increment of $m_{H^{\pm}}$. We also study the two-loop NLO QCD corrections to both the integrated cross section and the angular distribution of the charged Higgs boson, and find that the QCD relative correction is also sensitive to the charged Higgs mass and strongly depends on the final-state phase space. For $\tanβ= 2$, the QCD relative correction at a $500~ {\rm GeV}$ $e^+e^-$ collider varies in the range of $[-10\%,\, 11\%]$ as $m_{H^{\pm}}$ increases from $150$ to $400~ {\rm GeV}$.
