{"paper":{"title":"First results on low-mass WIMP from the CDEX-1 experiment at the China Jinping underground Laboratory","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["astro-ph.CO","physics.ins-det"],"primary_cat":"hep-ex","authors_text":"A.K. Soma, C. Du, C.H. Tseng, C.J. Tang, C.X. Yu, F.K. Lin, H.B. Li, H. Gong, H.J. He, H. Jiang, H. Ma, H.T. Wong, H.X. Huang, H.Y. Liao, H. Yu, H.Y. Xing, J.J. Zhu, J. Li, J.M. Li, J.M. Wang, J.P. Chang, J.P. Cheng, J.Q. Qin, J. Ren, J. Su, K.J. Kang, L.C. Lv, L. Singh, L.T. Yang, L. Wang, L. Zhang, M.B. Shen, M.G. Zhao, M.K. Singh, N. Chen, N. Yi, Q. Du, Q.H. Chen, Q.J. He, Q. Wang, Q. Yue, S.J. Mao, S.K. Liu, S.N. Zhong, S.T. Lin, S.W. Yang, S.Y. Wu, T.R. Huang, T. Xue, W.B. Zhu, W. Wu, W. Zhao, X.C. Ruan, X.H. Hu, X.H. Zeng, X.J. Xu, X. Li, X.Q. Hao, X.Y. Li, X.Z. Yu, X.Z. Zhu, Y. Bai, Y. Bi, Y.C. Chuang, Y.C. Wu, Y.H. Chen, Y.H. Zhang, Y.J. Li, Y.L. Li, Y. Xu, Z. Deng, Z.H. Zhu, Z.Y. Zhou, Z. Zeng, Z.Z. Xianyu","submitted_at":"2013-06-18T10:38:20Z","abstract_excerpt":"The China Dark matter Experiment collaboration reports the first experimental limit on WIMP dark matter from 14.6 kg-day of data taken with a 994 g p-type point-contact germanium detector at the China Jinping underground Laboratory where the rock overburden is more than 2400 m. The energy threshold achieved was 400 eVee. According to the 14.6 kg-day live data, we placed the limit of N= 1.75 * 10^{-40} cm^{2} at 90% confidence level on the spin-independent cross-section at WIMP mass of 7 GeV before differentiating bulk signals from the surface backgrounds."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.4135","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}