文献类型：期刊文献

英文题名：Collider search of light dark matter model with dark sector decay *

作者：Cheng, Yu[1,2,3];Liao, Wei[1];Yan, Qi-Shu[4,5]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai 200237, Peoples R China;[2]Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, Shanghai 200240, Peoples R China;[3]Shanghai Jiao Tong Univ, Sch Phys & Astron, Shanghai 200240, Peoples R China;[4]Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China;[5]Chinese Acad Sci, Inst High Energy Phys, Ctr Future High Energy Phys, Beijing 100049, Peoples R China

年份：2022

卷号：46

期号：6

外文期刊名：CHINESE PHYSICS C

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000800662600001)】；

基金：W. Liao is Supported by National Natural Science Foundation of China (11875130). Q.S.Yan is Supported by the National Natural Science Foundation of China (11475180, 11875260)

语种：英文

外文关键词：collider; light dark matter; dark sector signatures

摘要：We explore the possibility that the dark matter relic density is not produced by a thermal mechanism directly, but by the decay of other heavier dark-sector particles which themselves can be produced by the thermal freeze-out mechanism. Using a concrete model with light dark matter from dark sector decay, we study the collider signature of the dark sector particles associated with Higgs production processes. We find that future lepton colliders could be a better place to probe the signature of this kind of light dark matter model than hadron colliders such as LHC. Also, we find that a Higgs factory with center-of-mass energy 250 GeV has a better potential to resolve the signature of this kind of light dark matter model than a Higgs factory with center-of-mass energy 350 GeV.