Title: Constraining resonant dark matter with combined LHC electroweakino searches Show Chinese title

Title: 用结合的LHC弱相互作用子搜索对共振暗物质进行约束

Abstract: In the Minimal Supersymmetric Standard Model light neutralinos can satisfy the dark matter (DM) abundance constraint by resonant annihilation via a $Z$ or a light Higgs ($h$) boson. In this work we study the current and future status of this scenario by investigating relevant experimental constraints, including DM direct detection, measurements of $Z$ and Higgs invisible decays, and direct searches at the Large Hadron Collider (LHC). To take full advantage of the LHC data, we combine the results of all relevant electroweakino searches performed by the Compact Muon Solenoid (CMS) Collaboration. Such combination increases the bound on the Higgsino mass parameter to $|\mu|>390$ GeV, which is about 80 GeV stricter than the bound obtained from individual analyses. In a simplified model we find that the $Z$ funnel region is on the brink of exclusion, the $h$ funnel for $\mu<0$ only survives if $\tan\beta<7.4$, and the $h$ funnel for $\mu>0$ is the main surviving region. Future DM direct detection experiments, such as LUX and ZEPLIN, can explore the whole region, while the high luminosity LHC can exclude $\tan\beta>8$ for $\mu>0$ and $\tan\beta>5.5$ for $\mu<0$. After applying the muon anomalous magnetic moment constraint only a tiny part of the $Z/h$ funnel region survives which will soon be probed by ongoing experiments. Show Chinese abstract

Abstract: 在最小超对称标准模型中，轻中性子可以通过通过$Z$或轻希格斯（$h$）玻色子的共振湮灭来满足暗物质（DM）丰度约束。 在本工作中，我们通过研究相关实验限制来探讨此情景的当前和未来状况，包括 暗物质直接探测、$Z$和希格斯粒子不可见衰变的测量，以及大型强子对撞机（LHC）上的直接搜索。 为了充分利用LHC数据，我们将紧凑缪子线圈（CMS）合作组进行的所有相关电弱微子搜索结果结合起来。 这种组合将希格斯微子质量参数的限制提高到$|\mu|>390$GeV，比从单独分析获得的限制严格约80 GeV。 在简化模型中，我们发现$Z$漏斗区域处于排除的边缘，$h$漏斗对于$\mu<0$仅在$\tan\beta<7.4$的情况下才能存活，而$h$漏斗对于$\mu>0$是主要的存活区域。 未来DM直接探测实验，如LUX和ZEPLIN，可以探索整个区域，而高亮度LHC可以排除$\tan\beta>8$对于$\mu>0$和$\tan\beta>5.5$对于$\mu<0$。 在仅应用缪子反常磁矩约束后，$Z/h$漏斗区域仅剩下极小部分，这将很快被正在进行的实验探测。