中国物理学会高能物理分会第十三届全国粒子物理学术会议（2021）

CDEX合作组自2009年以来在世界岩石覆盖最深的锦屏地下实验室使用点电极高纯锗锗探测器开展暗物质直接探测。最近，基于CDEX-1和CDEX-10实验发表了多项国际先进水平的物理结果，包括暗物质年度调制效应分析[1]、基于Migdal效应的亚GeV轻暗物质搜索[2]、暗光子探测[3]、太阳轴子和类轴子探测[4]、有效场论框架下的WIMP探测[5]等。目前正在开展50公斤级高纯锗阵列暗物质实验（CDEX-50dm）的准备和关键技术预研，如锗晶体生长、高纯锗探测器自主研制、地下实验室低本底电解铜、低噪声低阈值前端电子学等。本报告将讨论CDEX暗物质实验的现状以及未来展望。 1. L. T. Yang et al., (CDEX Collaboration) Light WIMPs Search by Annual Modulation Analysis with a Point-Contact Germanium Detector at the China Jinping Underground Laboratory, Phys. Rev. Lett. 123, 221301 (2019) 2. Z. Z. Liu et al., (CDEX Collaboration) Constraints on spin-independent nucleus scattering with sub-GeV WIMP dark matter from the CDEX-1B Experiment at CJPL, Phys. Rev. Lett. 123 161301 (2019) 3. Z. She et al., (CDEX Collaboration) “Direct Detection Constraints on Dark Photons with CDEX-10 Experiment at the China Jinping Underground Laboratory” Phys. Rev. Lett. 124, 111301 (2020) 4. Y. Wang et al. (CDEX Collaboration) “Improved limits on solar axions and bosonic dark matter from the CDEX-1B experiment using profile likelihood ratio method” Phys. Rev. D 101, 052003 (2020) 5. Y. Wang et al., (CDEX Collaboration), First experimental constraints on WIMP couplings in the effective field theory framework from CDEX, Sci. China-Phys. Mech. Astron. 64, 281011 (2021)