種種天文物理觀測告訴我們，現在宇宙中有百分之八十以上的物質是暗物質，但是我們對於暗物質的詳細特性一無所知，瞭解暗物質是當今粒子物理界的重要課題之一。暗物 質的一個熱門人選是大質量弱交互作用粒子。這個子計畫首先提出：用大強子對撞機緊湊渺子螺線管實驗在第二及第三運行時期所取的數據來尋找大質量弱交互作用粒子。所使用的物理分析管道有三：單一希格斯玻色子、媒介子衰變到底夸克、加入長生命週期粒子的暗物質分析延伸。另外，這個子計畫提出：用模擬數據來瞭解為了未來加速器所設計的偵測器--SiFCC。我們將利用噴射流的能量解析度、噴射流內部結構、以及噴射流裡粒子抵達偵測器的時間，來檢驗偵測器的表現。這些物理量在暗物質物理分析也常被用來減低背景干擾。 ;Various astrophysical observations indicate that more than 80% of the matter in the universe is dark matter. However, we know nothing about the detailed feature of dark matter. Unraveling the nature of dark matter is one of the most important targets of particle physics today. A popular dark matter candidate is weakly interacting massive particle (WIMP). This document proposes to look for WIMP dark matter produced at large hadron collider (LHC) using the Run II and Run III data collected by the Compact Muon Solenoid experiment (CMS). The searches for dark matter will be performed in three physics analyses: mono-h, the visible decays of DM-SM mediator into b quarks, extension of mono-X with long-lived intermediate particles. In addition, this document proposes to study the performance of the detector SiFCC for future 100 TeV pp colliders. The detector performance will be evaluated using jet energy resolution, substructure variables, and timing information; these variables are typically used to reduce background in the dark matter searches.
