论文标题
在二维质量空间中搜索具有2个无形粒子的最终状态
Searching in 2-Dimensional Mass Space for Final States with 2 Invisible Particles
论文作者
论文摘要
提出了一种在最终状态中搜索未知质量颗粒的方法。寻找缺少能量的最终状态是一项艰巨的任务，通常在缺失的能量相关分布的尾部执行。提出的搜索方法基于最终状态的二维质量重建，具有两个看不见的粒子。因此，可以进行撞击，从而使信号与背景区分更强。 BSM理论的参数可以从质量分布中提取，这是迈向理解其真实本质的宝贵步骤。该方法的原理证明是基于其Dilepton最终状态中现有的SM顶对。可以在LHC上以这种方式搜索包括暗物质候选人或重型伙伴在内的许多有趣的拓扑结构。
A method to search for particles of unknown masses in final states with two invisible particles is presented. Searching for final states with missing energy is a challenging task usually performed in the tail of a missing energy related distribution. The search method proposed is based on a 2-Dimensional mass reconstruction of the final state with two invisible particles. Thus, a bump hunting is possible, allowing a stronger signal versus background discrimination. Parameters of the BSM theory can be extracted from the mass distributions, a valuable step towards understanding its true nature. The proof of principle of the method is based on the existing SM top pairs in their dilepton final state. Many interesting topologies including dark matter candidates or heavy top partners can be searched this way at the LHC.
