arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1709.06103hep-ph
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在未来的希格斯工厂学习希格斯物理学

Learning from Higgs Physics at Future Higgs Factories

Jiayin Gu, Honglei Li, Zhen Liu, Shufang Su, Wei Su

摘要:

未来的希格斯工厂可以在希格斯属性测量上达到令人印象深刻的精度。在本文中,而不是传统的重点在某些相互作用基础上的希格斯精度,我们探讨了它的敏感性,新的物理模型在正负电子对撞机。特别地,我们研究了两类新的物理模型,作为弱相互作用模型的例子,标准模型(SM)和两个Higgs双模型(2 HDM),作为强动力学模型的例子,最小复合Higgs模型(MCHM)和更一般的算子计数的三种典型模式。我们对各种希格斯粒子搜索通道进行了全局拟合,以获得95%C. L。模型参数空间的约束。在具有单重扩张的SM中,我们得到了单重-二重混合角sin(θ)的极限,以及更一般的诱导高维算子的Wilson系数.在2 HDM中,我们分析了tan(beta)与cos(beta-alpha)平面上的树级效应,以及重希格斯玻色子玻色子在排列极限中的单圈贡献,得到了不同类型的2 HDM对重希格斯玻色子质量的约束。在强动力学模型中,我们得到了强动力学尺度的下限。此外,一旦观察到希格斯耦合的偏差,它们可以用来区分不同的模型。我们还比较了各种未来的希格斯工厂,即圆形电子正电子对撞机(CEPC),未来圆形对撞机(FCC)-ee和国际线性对撞机(ILC)的灵敏度。

英文摘要:

Future Higgs factories can reach impressive precision on Higgs property measurements. In this paper, instead of conventional focus of Higgs precision in certain interaction bases, we explored its sensitivity to new physics models at the electron-positron colliders. In particular, we studied two categories of new physics models, Standard Model (SM) with a real scalar singlet extension, and Two Higgs Double Model (2HDM) as examples of weakly-interacting models, Minimal Composite Higgs Model (MCHM) and three typical patterns of the more general operator counting for strong interacting models as examples of strong dynamics. We performed a global fit to various Higgs search channels to obtain the 95% C.L. constraints on the model parameter space. In the SM with a singlet extension, we obtained the limits on the singlet-doublet mixing angle sin(theta), as well as the more general Wilson coefficients of the induced higher dimensional operators. In the 2HDM, we analyzed tree level effects in tan(beta) vs. cos(beta-alpha) plane, as well as the one-loop contributions from the heavy Higgs bosons in the alignment limit to obtain the constraints on heavy Higgs masses for different types of 2HDM. In strong dynamics models, we obtained lower limits on the strong dynamics scale. In addition, once deviations of Higgs couplings are observed, they can be used to distinguish different models. We also compared the sensitivity of various future Higgs factories, namely Circular Electron Positron Collider (CEPC), Future Circular Collider (FCC)-ee and International Linear Collider (ILC).

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。

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