中大高能實驗團隊過去在本計畫申請人帶領下參與CMS實驗並建造了目前高能實驗中最大型以矽晶片為主的前置簇射量能器。本組將持續維護前置簇射量能器在大強子對撞機第三輪實驗數據擷取中的運作。CMS實驗第二階段探測器升級計畫將建造一個比前置簇射量能器大約三十倍，也是以矽晶片為主的高粒度量能器。本組將建立矽晶片品質控管中心，進行八吋矽晶片的電性測量。在物理分析方面，過去本組利用大強子對撞機第一輪及第二輪的實驗數據進行了希格斯粒子、標準模型及超越標準模型的物理分析，並發表數篇論文。在此三年計畫中，我們提議利用第二輪及即將到來的第三輪實驗數據，進行兩項至今在大強子對撞機皆未測量過的物理分析：(一)希格斯粒子質量對希格斯粒子橫向動量的測量和(二)Z玻色子衰變到兩個微中子再加上一個光子和兩個噴射流的向量玻色子散射的精密測量。 ;I led the NCUHEP to participate in the CMS experiment and involve in the construction of the Preshower detector, a silicon based electromagnetic calorimeter. NCUHEP will continue maintaining the Preshower for LHC Run-3 data taking. In the phase-2 upgrade, CMS will build a much larger silicon based calorimeter, high granularity calorimeter (HGCal), which will be 30 times larger than the Preshower. We will set up a silicon quality control (SQC) center in NCU and take part in the measurement of the electric properties of the 8-inch HGCal silicon sensors. As to the physics analysis, NCUHEP published several papers in the field of Higgs physics, Standard Model physics and beyond Standard Model searches based on the data taken in LHC Run-1 and Run-2. In this proposal, we propose to perform two easurements, which have not been done at the LHC, using the Run-2 and upcoming Run-3 data. One is the measurement of the Higgs mass as a function of Higgs transverse momentum and the other one is the measurement of the vector boson scattering with the final state of Z(→νν)+γ and 2 jets.
