Exotic Dark Matter Search with CDEX-10 Experiment at China Jinping
  Underground Laboratory

An, H. P.; C., Greeshma; Chang, J. P.; Chen, Y. H.; Cheng, J. P.; Dai, W. H.; Deng, Z.; Fang, C. H.; Geng, X. P.; Gong, H.; Guo, Q. J.; Guo, X. Y.; He, L.; He, S. M.; Hu, J. W.; Huang, H. X.; Huang, T. C.; Jia, H. T.; Jia, L. P.; Jiang, X.; Kang, K. J.; Karmakar, S.; Li, H. B.; Li, J.; Li, J. M.; Li, Q. Y.; Li, R. M. J.; Li, X. Q.; Li, Y. J.; Li, Y. L.; Liang, Y. F.; Liao, B.; Lin, F. K.; Lin, S. T.; Liu, S. K.; Liu, Y.; Liu, Y. D.; Liu, Y. Y.; Liu, Z. Z.; Ma, H.; Mao, Y. C.; Nie, Q. Y.; Ning, J. H.; Pan, H.; Qi, N. C.; Ren, J.; Ruan, X. C.; She, Z.; Singh, M. K.; Sun, T. X.; Tang, C. J.; Tang, W. Y.; Tian, Y.; Wang, G. F.; Wang, L.; Wang, Q.; Wang, Y.; Wang, Y. X.; Wong, H. T.; Wu, S. Y.; Wu, Y. C.; Xing, H. Y.; Xu, R.; Xu, Y.; Xue, T.; Yan, Y. L.; Yang, L. T.; Yi, N.; Yu, C. X.; Yu, H. J.; Yue, J. F.; Yue, Q.; Zeng, M.; Zeng, Z.; Zhang, B. T.; Zhang, F. S.; Zhang, L.; Zhang, Z. H.; Zhang, Z. Y.; Zhao, K. K.; Zhao, M. G.; Zhou, J. F.; Zhou, Z. Y.; Zhu, J. J.

Exotic Dark Matter Search with CDEX-10 Experiment at China Jinping Underground Laboratory

Abstract

A search for exotic dark matter (DM) in the sub-GeV mass range has been conducted using 205 kg

\cdot

day data taken from a p-type point contact germanium detector of CDEX-10 experiment at China Jinping underground laboratory. New low-mass dark matter searching channels, neutral current fermionic DM absorption (

\chi+A\rightarrow \nu+A

) and DM-nucleus 3

\rightarrow

2 scattering (

\chi+\chi+A\rightarrow \phi+A

), have been analyzed with an energy threshold of 160 eVee. No significant signal was found. Thus new limits on the DM-nucleon interaction cross section are set for both models at sub-GeV DM mass region. A cross section limit for the fermionic DM absorption is set to be