标题： 在$pp$碰撞中，通过缺失横向动量和一个衰变为两个光子的希格斯玻色子事件寻找暗物质，使用ATLAS探测器在$\sqrt{s}=8$TeV 的能区进行研究 显示英文标题

标题： Search for Dark Matter in Events with Missing Transverse Momentum and a Higgs Boson Decaying to Two Photons in $pp$ Collisions at $\sqrt{s}=8$ TeV with the ATLAS Detector

摘要： 报告了在具有大缺失横向动量和一个衰变为两个光子的希格斯玻色子事例中寻找新现象的结果。 在质子-质子对撞中，中心能量为8 TeV，对应的积分亮度为20.3 fb$^{-1}$，数据已通过LHC上的ATLAS探测器收集。 观测到的数据很好地由预期的标准模型背景描述。 还对具有大缺失横向动量和希格斯玻色子候选事例的截面设置了上限。 给出了针对具有暗物质候选者的超出标准模型物理模型的排除限。 显示英文摘要

摘要： Results of a search for new phenomena in events with large missing transverse momentum and a Higgs boson decaying to two photons are reported. Data from proton-proton collisions at a center-of-mass energy of 8 TeV and corresponding to an integrated luminosity of 20.3 fb$^{-1}$ have been collected with the ATLAS detector at the LHC. The observed data are well described by the expected Standard Model backgrounds. Upper limits on the cross section of events with large missing transverse momentum and a Higgs boson candidate are also placed. Exclusion limits are presented for models of physics beyond the Standard Model featuring dark-matter candidates.