论文标题
通过在ILC处搜索Higgs Boson的无形衰变来探测黑暗部门
Probing the dark sector via searches for invisible decays of the Higgs boson at the ILC
论文作者
论文摘要
尽管各种天体物理学观察表明了暗物质（DM）的存在，但尚未发现它。我们可以假设一个场景，其中解释DM的粒子只能通过与希格斯扇区（所谓的HIGGS-PORTAL模型）耦合与标准模型粒子相互作用。可以使用希格斯玻色子的无形衰变对撞机实验来研究该模型。在这项研究中，我们使用国际大型探测器（ILD）完整检测器模拟评估了国际线性对撞机（ILC）对希格斯无形衰变的搜索能力。我们估计95％C.L.上极限（UL）在看不见的希格斯腐烂的分支比率上，并将它们在两个质量中心的能量条件之间进行比较：$ \ sqrt {s} = 250 $ GEV和500 GEV。此外，我们描述了关于DM搜索能力的直接检测实验的Lepton Collider实验的互补性。
Although the existence of Dark Matter (DM) has been suggested by various astrophysical observations, it has not yet been discovered today. We can assume a scenario in which the particles that account for the DM can interact with the Standard Model particles only through their couplings with the Higgs sector, the so-called Higgs-portal model. This model can be investigated by collider experiment using the invisible decay of Higgs boson. In this study, we evaluate the search ability of International Linear Collider (ILC) for invisible decay of the Higgs using International Large Detector (ILD) full detector simulation. We estimate 95% C.L. upper limit (UL) on the branching ratio of invisible Higgs decays and compare them between two center-of-mass energy conditions: $\sqrt{s} = 250$ GeV and 500 GeV. In addition, we describe the complementarity of lepton collider experiment to the direct detection experiment about DM search ability.
