Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg x day Data of the CDEX-10 Experiment

Jiang, H.; Jia, L.; Yue, Q.; Kang, K.; Cheng, J.; Li, Y.; Wong, H.; Agartioglu, M.; An, H.; Chang, J.; Chen, J.; Chen, Y.; Deng, Z.; Du, Q.; Gong, H.; He, L.; Hu, J.; Hu, Q.; Huang, H.; Li, H.; Li, H.; Li, J.; Li, J.; Li, X.; Li, X.; Li, Y.; Liao, B.; Lin, F.; Lin, S.; Liu, S.; Liu, Y.; Liu, Y.; Liu, Z.; Ma, H.; Ma, J.; Pan, H.; Ren, J.; Ruan, X.; Sevda, B.; Sharma, V.; Shen, M.; Singh, L.; Singh, M.; Sun, T.; Tang, C.; Tang, W.; Tian, Y.; Wang, G.; Wang, J.; Wang, L.; Wang, Q.; Wang, Y.; Wu, S.; Wu, Y.; Xing, H.; Xu, Y.; Xue, T.; Yang, L.; Yang, S.; Yi, N.; Yu, C.; Yu, H.; Yue, J.; Zeng, X.; Zeng, M.; Zeng, Z.; Zhang, F.; Zhang, Y.; Zhao, M.; Zhou, J.; Zhou, Z.; Zhu, J.; Zhu, Z.

doi:10.1103/physrevlett.120.241301

Limits on Light Weakly Interacting Massive Particles from the First 102.8 kg x day Data of the CDEX-10 Experiment

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Jiang H., Jia L. P., Yue Q., Kang K. J., Cheng J. P., Li Y. J., ...More

PHYSICAL REVIEW LETTERS, vol.120, no.24, 2018 (SCI-Expanded)

Publication Type: Article / Article
Volume: 120 Issue: 24
Publication Date: 2018
Doi Number: 10.1103/physrevlett.120.241301
Journal Name: PHYSICAL REVIEW LETTERS
Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Dokuz Eylül University Affiliated: No

Abstract

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 x 10(-42) and 3 x 10(-36) cm(2) at a 90% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass (m(chi)) of 5 GeV/c(2) are achieved. The lower reach of m(chi) is extended to 2 GeV/c(2).