Limits on Light WIMPs with a Germanium Detector at 172 eVee threshold at

 the China Jinping Underground Laboratory

Su, J.; Soma, A. K.; Ren, J.; Tang, C. J.; Tseng, C. H.; Hao, X. Q.; Yue, Q.; Cheng, J. P.; Li, Y. J.; Wong, H. T.; Liu, S. K.; Lin, S. T.; Chen, Q. H.; Chang, J. P.; Chuang, Y C; Du, Q.; Deng, Z.; He, H. J.; Chen, Y H; Huang, H. X.; Huang, T. R.; He, Q. J.; Ruan, X. C.; Shen, M. B.; Li, J. M.; Qin, J. Q.; Li, H. B.; Ma, H.; Lü, L. C.; Li, Y. L.; Li, X Y; Liao, H. Y.; Li, X.; Singh, L; Li, X. Q.; Li, J.; Jiang, H.; Gong, H.; Chen, N.; Kang, K. J.; Lin, F. K.; Xianyu, Z. Z.; Mao, S. J.; Singh, M K; Yang, S. W.; Wu, S. Y.; Wang, J. M.; Xue, T.; Xu, F. Z.; Xu, Y.; Wu, Y. C.; Xu, X. J.; Zhang, L.; Zhang, Y. -H.; Zeng, Z; Zhu, Z. H.; Zeng, X. H.; Zhu, W. B.; Zhu, J. J.; Zhu, X. Z.; Yi, N; Zhou, Z. Y.; Xing, H. Y.; Yu, C. X.; Xiao, R. Q.; Zhao, W; Yu, H; Zhao, M. G.; Yu, X. Z.; Wang, L.; Wang, Q.; Yang, C. W.; Yang, L. T.

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Limits on Light WIMPs with a Germanium Detector at 172 eVee threshold at the China Jinping Underground Laboratory

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Author(s): J. Su, A. Soma, J. Ren, C. J. Tang, C. Tseng, X. Q. Hao, Q. Yue, J. P. Cheng, Y. J. Li, H. Wong, S. K. Liu, S. T. Lin, Q. H. Chen, J. P. Chang, Y C Chuang, Q. Du, Z. Deng, H. J. He, Y H Chen, H. Huang, T. R. Huang, Q. He, X. C. Ruan, M. Shen, J. M. Li, J. Q. Qin, H. Li, H. Ma, L. Lü, Y. L. Li, X Li, H. Liao, X. Li, L Singh, X. Li, J. Li, H. Jiang, H. Gong, N. Chen, K. J. Kang, F. K. Lin, Z. Z. Xianyu, S. J. Mao, M Singh, S. Yang, S. Wu, J. Wang, T. Xue, F. Z. Xu, Y. Xu, Y. Wu, X. J. Xu, L. Zhang, Y. -H. Zhang, Z Zeng, Z. Zhu, X. Zeng, W. B. Zhu, J. Zhu, X. Zhu, N Yi, Z. Y. Zhou, H. Y. Xing, C. X. Yu, R. Xiao, W Zhao, H Yu, M. Zhao, X. Yu, L. Wang, Q. Wang, C. W. Yang, L. Yang

Publication date: 2014-03-21

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Abstract

The China Dark Matter Experiment reports results on light WIMP dark matter searches at the China Jinping Underground Laboratory with a germanium detector array with a total mass of 20 g. The physics threshold achieved is 172 eVee at 50% signal efficiency. With 0.784 kg-days of data, exclusion region on spin-independent coupling with the nucleon is derived, improving over our earlier bounds at WIMP mass less than 4.6 GeV.

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ArXiv ID:: 1403.5421

ScienceOpen disciplines: Cosmology & Extragalactic astrophysics,Technical & Applied physics,High energy & Particle physics

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ScienceOpen disciplines: Cosmology & Extragalactic astrophysics, Technical & Applied physics, High energy & Particle physics

Limits on Light WIMPs with a Germanium Detector at 172 eVee threshold at the China Jinping Underground Laboratory

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