论文标题
通过Triphoton产生对异常的希格斯耦合的敏感性达到了LHC圆形高能量黑岩黑子队的敏感性
Sensitivity reach on anomalous Higgs couplings via triphoton production for the post-LHC circular high-energy hadron colliders
论文作者
论文摘要
在标准模型有效田间理论（EFT）循环高效应框架（EFT）框架中研究了三孔生产以获得$Hγ$和$HZγ$顶点的异常希格斯玻色子耦合的限制的潜力14 TEV/3 AB $^{ - 1} $，27 TEV/15 AB $^{ - 1} $和37.5 TEV/15 AB $^{ - 1} $的配置。 Madgraph使用Feynrules和UFO框架实现了有效的SM EFT的Lagrangian，用于生成背景和信号事件。然后，这些事件通过Pythia 8进行Parton淋浴和Delphes，以包括现实的探测器效应。在优化了三个光子运动学的切割以及两个前导光子的重建质量后，三个前导光子的不变质量被用于获得对尺寸六算子的威尔逊系数的约束。我们报告了$ \ bar {c}_γ$和$ \ tilde {c}_γ$耦合在95 \％置信度的结果，并与LHC结果进行比较。我们在$ \ bar {c}_γ$（$ \ tilde {c}_γ$）上获得的限制是$ [ - 3.15; 1.41] \ times10^{ - 2} $（$ [-2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; 2.12; （$ [ - 0.98; 0.98] \ times10^{ - 2} $）和$ [-0.89; 0.66; 0.66; 0.66; times10^{ - 2} $（$ [-0.77; 0.77; 0.77; 0.77; 0.77; 0.77; 0.77] \ times10^{ - 2} $分别用于HL-LHC，HE-LHC，HE-LHC和LE-FCC。
The potential of triphoton production to obtain limits on anomalous Higgs boson couplings at $Hγγ$ and $HZγ$ vertices is studied in Standard Model Effective Field Theory (EFT) framework for the post-LHC circular high-energy hadron colliders: High Luminosity-LHC (HL-LHC), High Energy LHC (HE-LHC) and Low Energy FCC (LE-FCC) which are designed with standard configurations of 14 TeV/3 ab$^{-1}$, 27 TeV/15 ab$^{-1}$ and 37.5 TeV/15 ab$^{-1}$. Madgraph in which the effective Lagrangian of the SM EFT is implemented using FeynRules and UFO framework is used to generate both background and signal events. These events are then passed through Pythia 8 for parton showering and Delphes to include realistic detector effects. After optimizing cuts on kinematics of three photons as well as the reconstructed invariant mass of the two leading photons, invariant mass of three leading photon is used to obtain constraints on the Wilson coefficients of dimension-six operators. We report the result of two dimensional scan of $\bar{c}_γ$ and $\tilde{c}_γ$ couplings at 95\% confidence level and compare with LHC results. Our obtained limits without systematic error on $\bar{c}_γ$ ( $\tilde{c}_γ$) are $[-3.15;1.41]\times10^{-2}$ ($[-2.12;2.12]\times10^{-2}$), $[-1.21;0.78]\times10^{-2}$ ($[-0.98;0.98]\times10^{-2}$) and $[-0.89;0.66]\times10^{-2}$ ($[-0.77;0.77]\times10^{-2}$) for HL-LHC, HE-LHC and LE-FCC, respectively.
