We report the first results of a light weakly interacting massive particles (WIMPs) search from the CDEX-10 experiment with a 10 kg germanium detector array immersed in liquid nitrogen at the China Jinping Underground Laboratory with a physics data size of 102.8 kg day. At an analysis threshold of 160 eVee, improved limits of 8 ×10−42 and 3 ×10−36 cm2 at a 90\% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass (mχ) of 5 GeV/c2 are achieved. The lower reach of mχ is extended to 2 GeV/c2.
@article{arxiv.1802.09016,
title = {Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg ${\times}$ day Data of the CDEX-10 Experiment},
author = {H. Jiang and L. P. Jia and Q. Yue and K. J. Kang and J. P. Cheng and Y. J. Li and H. T. Wong and M. Agartioglu and H. P. An and J. P. Chang and J. H. Chen and Y. H. Chen and Z. Deng and Q. Du and H. Gong and L. He and J. W. Hu and Q. D. Hu and H. X. Huang and H. B. Li and H. Li and J. M. Li and J. Li and X. Li and X. Q. Li and Y. L. Li and B. Liao and F. K. Lin and S. T. Lin and S. K. Liu and Y. D. Liu and Y. Y. Liu and Z. Z. Liu and H. Ma and J. L. Ma and H. Pan and J. Ren and X. C. Ruan and B. Sevda and V. Sharma and M. B. Shen and L. Singh and M. K. Singh and T. X. Sun and C. J. Tang and W. Y. Tang and Y. Tian and G. F. Wang and J. M. Wang and L. Wang and Q. Wang and Y. Wang and S. Y. Wu and Y. C. Wu and H. Y. Xing and Y. Xu and T. Xue and L. T. Yang and S. W. Yang and N. Yi and C. X. Yu and H. J. Yu and J. F. Yue and X. H. Zeng and M. Zeng and Z. Zeng and F. S. Zhang and Y. H. Zhang and M. G. Zhao and J. F. Zhou and Z. Y. Zhou and J. J. Zhu and Z. H. Zhu},
journal= {arXiv preprint arXiv:1802.09016},
year = {2018}
}