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arXiv 1910.02571hep-ph
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HL-LHC和HE-LHC玻色子衰变通道中同号荷电Higgs对的产生

Same-sign Charged Higgs Pair Production in bosonic decay channels at the HL-LHC and HE-LHC

Abdesslam Arhrib, Kingman Cheung, Chih-Ting Lu

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摘要：

通过矢量玻色子散射产生的同号带电Higgs对是研究双Higgs二重态模型中重标量、赝标量和带电Higgs玻色子之间质量谱的一个有用的方法。已经表明，生产横截面按对准极限$(\cos(β- α)=0)$中的质量差$Δm = (m_{H^0} - m_{A^0})$的平方缩放。我们研究了在高亮度大型强子对撞机（HL-LHC）和拟议的27 TeV $pp$对撞机的这种相同符号的带电希格斯对生产的潜在测量，重点是在衰变通道$H^\pm H^\pm \to (W^\pm A^0 ) (W^\pm A^0)$，这是在一般的主导模式时，带电希格斯质量高于$W^\pm A^0$阈值。我们还研究了当前允许的参数空间，考虑到模型的理论约束，电弱精密测量，$B$衰减，并直接搜索在$H^\pm \to τ^\pm ν_τ$和$H^\pm \to W ^\pm A^0 \to (\ell^\pmν_{\ell} ) (μμ)$。

英文摘要：

Same-sign charged Higgs pair production via vector-boson scattering is a useful probe of the mass spectrum among the heavier scalar, pseudoscalar, and charged Higgs bosons in two-Higgs-doublet models. It has been shown that the production cross section scales as the square of the mass difference $Δm = (m_{H^0} - m_{A^0})$ in the alignment limit $(\cos(β- α)=0)$. We study the potential measurement of this same-sign charged Higgs pair production at the high-luminosity LHC (HL-LHC) and the proposed 27 TeV $pp$ collider, with emphasis in the decay channel $H^\pm H^\pm \to (W^\pm A^0 ) (W^\pm A^0)$, which is in general the dominant mode when the charged Higgs mass is above the $W^\pm A^0$ threshold. We also examine the current allowed parameter space taking into account the theoretical constraints on the model, the electroweak precision measurements, $B$ decays, and direct searches in the $H^\pm \to τ^\pm ν_τ$ and $H^\pm \to W ^\pm A^0 \to (\ell^\pmν_{\ell} ) (μμ)$.

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