Limits on light WIMPs with a germanium detector at 177 eVee threshold at the China Jinping Underground Laboratory
High Energy Physics - Experiment
2014-08-20 v2 Cosmology and Nongalactic Astrophysics
Instrumentation and Detectors
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 177 eVee ("ee" represents electron equivalent energy) 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.
Keywords
Cite
@article{arxiv.1403.5421,
title = {Limits on light WIMPs with a germanium detector at 177 eVee threshold at the China Jinping Underground Laboratory},
author = {S. K. Liu and Q. Yue and K. J. Kang and J. P. Cheng and H. T. Wong and Y. J. Li and S. T. Lin and J. P. Chang and N. Chen and Q. H. Chen and Y. H. Chen and Y. C. Chuang and Z. Deng and Q. Du and H. Gong and X. Q. Hao and H. J. He and Q. J. He and H. X. Huang and T. R. Huang and H. Jiang and H. B. Li and J. M. Li and J. Li and J. Li and X. Li and X. Q. Li and X. Y. Li and Y. L. Li and H. Y. Liao and F. K. Lin and L. C. Lü and H. Ma and S. J. Mao and J. Q. Qin and J. Ren and J. Ren and X. C. Ruan and M. B. Shen and L. Singh and M. K. Singh and A. K. Soma and J. Su and C. J. Tang and C. H. Tseng and J. M. Wang and L. Wang and Q. Wang and S. Y. Wu and Y. C. Wu and Y. C. Wu and Z. Z. Xianyu and R. Q. Xiao and H. Y. Xing and F. Z. Xu and Y. Xu and X. J. Xu and T. Xue and C. W. Yang and L. T. Yang and S. W. Yang and N. Yi and C. X. Yu and H. Yu and X. Z. Yu and X. H. Zeng and Z. Zeng and L. Zhang and Y. H. Zhang and M. G. Zhao and W. Zhao and Z. Y. Zhou and J. J. Zhu and W. B. Zhu and X. Z. Zhu and Z. H. Zhu},
journal= {arXiv preprint arXiv:1403.5421},
year = {2014}
}
Comments
8 pages, 13 figures, 2 tables. To be published in Phys. Rev. D