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内蒙古自治区呼和浩特市赛罕区大学西街235号 邮编: 010021
作者机构:Key Laboratory of Particle and Radiation Imaging(Ministry of Education)Department of Engineering PhysicsTsinghua UniversityBeijing 100084China Department of PhysicsTsinghua UniversityBeijing 100084China Institute of PhysicsAcademia SinicaTaipei 11529China NUCTECH CompanyBeijing 100084China YaLong River Hydropower Development CompanyChengdu 610051China College of Nuclear Science and TechnologyBeijing Normal UniversityBeijing 100875China College of PhysicsSichuan UniversityChengdu 610065China School of PhysicsPeking UniversityBeijing 100871China Sino-French Institute of Nuclear and TechnologySun Yet-sen UniversityZhuhai 519082China Department of Nuclear PhysicsChina Institute of Atomic EnergyBeijing 102413China Department of PhysicsBanaras Hindu UniversityVaranasi 221005India Department of PhysicsBeijing Normal UniversityBeijing 100875China School of PhysicsNankai UniversityTianjin 300071China
出 版 物:《Science China(Physics,Mechanics & Astronomy)》 (中国科学:物理学、力学、天文学(英文版))
年 卷 期:2021年第64卷第8期
页 面:15-22页
核心收录:
学科分类:07[理学] 070401[理学-天体物理] 0704[理学-天文学]
基 金:supported by the National Key Research and Development Program of China(Grant No.2017YFA0402200) the National Natural Science Foundation of China(Grant Nos.11725522,11675088,11475099 U1865205)
主 题:WIMP EFT CDEX dark matter annual modulation
摘 要:We present weakly interacting massive particles(WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment(CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level(C.L.) and improve over the current bounds in the low mχregion. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the m_(χ)6 GeV/c^(2) region.