Probing electroweak dark matter at 14 TeV LHC  

作　　者：Shuai Xu Si-Bo Zheng 徐帅;郑思波(Department of Physics,Chongqing University,Chongqing 401331,China;Department of Physics,Harvard University,Cambridge,MA 02138,USA)

机构地区：[1]Department of Physics,Chongqing University,Chongqing 401331,China [2]Department of Physics,Harvard University,Cambridge,MA 02138,USA

出　　处：《Chinese Physics C》2020年第11期22-30,共9页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China(11775039);the Chinese Scholarship Council and the Fundamental Research Funds for the Central Universities at CQU with(cqu2017hbrc1B05)。

摘　　要：Well-motivated electroweak dark matter is often hosted by an extended electroweak sector that also contains new lepton pairs with masses near the weak scale.In this study,we explore such electroweak dark matter by combining dark matter direct detection experiments and high-luminosity LHC probes of new lepton pairs.Using Z- and W-associated electroweak processes with two or three lepton final states,we show that depending on the overall coupling constant,dark matter masses of up to 170−210 GeV can be excluded at the 2σ level and those up to 175−205 GeV can be discovered at the 5σ level at the 14 TeV LHC with integrated luminosities of 300 fb^−1 and 3000 fb^−1,respectively.

关 键 词：dark matter electroweak processes LHC 

分 类 号：O572.32[理学—粒子物理与原子核物理]