FCC-hh三光子产生中Higgs有效耦合的可观测性检验
Testing for observability of Higgs effective couplings in triphoton production at FCC-hh
摘要：
本文在一个与模型无关的标准模型有效场论框架下，研究了$pp\to γγγ$过程在探测Higgs-规范玻色子相互作用的CP守恒和CP破坏的六维算符方面的潜力.假设在$Hγγ$和$HZγ$顶点存在异常希格斯玻色子耦合的信号事件以及相关的SM背景事件在MadGraph中生成，然后通过Pythia 8进行部分子淋浴和Delphes以包括检测器效应。经过详细的检查的运动学变量，我们使用的两个领先的光子与优化的运动学削减不变的质量分布，以获得约束的威尔逊系数的6维运营商。我们报道，在积分亮度为10 ab的$^{-1}$，$\bar{c}_γ$和$\tilde{c}_γ$耦合在95%置信水平下的极限分别为[-0.0051; 0.0038]和[-0.0043; 0.0043]，无系统误差。
英文摘要：
We investigate the potential of the $pp\to γγγ$ process to probe CP-conserving and CP-violating dimension-six operators of Higgs-gauge boson interactions in a model-independent Standard Model effective field theory framework at the center of mass energy of 100 TeV which is designed for the Future Circular hadron-hadron Collider. Signal events assuming the existence of anomalous Higgs boson couplings at $Hγγ$ and $HZγ$ vertices and the relevant SM background events are generated in MadGraph, then passed through Pythia 8 for parton showering and Delphes to include detector effects. After detailed examination of kinematic variables, we use the invariant mass distribution of the two leading photons with optimized kinematic cuts to obtain constraints on the Wilson coefficients of dimension-six operators. We report that limits at 95\% confidence level on $\bar{c}_γ$ and $\tilde{c}_γ$ couplings with an integrated luminosity of 10 ab$^{-1}$ are [-0.0051; 0.0038] and [-0.0043; 0.0043] without systematic error, respectively.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
