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

Authors :
J. L. Ma
Qiang Du
H. P. An
Hao Ma
Jun Ren
Tianxi Sun
Henry T. Wong
Hechuan Jiang
L. He
H. B. Li
Kejun Kang
X. H. Zeng
Y. H. Zhang
H. Pan
Hao-Yang Xing
S. K. Liu
Zhi Deng
Ye Chen
N. Yi
M. G. Zhao
Qian Yue
C. X. Yu
Yucheng Wu
M. Agartioglu
F. K. Lin
Y. Y. Liu
Zuowei Liu
L. T. Yang
W. Y. Tang
G. F. Wang
Lei Wang
J. P. Chang
J. Cheng
C. J. Tang
J. F. Zhou
J. M. Wang
Tian Xue
Zhi Zeng
Song-Wei Yang
L. Singh
J. Li
X. Q. Li
Feng-Shou Zhang
Yuanjing Li
Y. D. Liu
Jing-Han Chen
Shengzhou Wu
B. Liao
Q. D. Hu
X. C. Ruan
J. F. Yue
Y. Wang
Zhong-Hua Zhu
Y. Li
Yang Tian
B. Sevda
L. P. Jia
Shin-Ted Lin
X. N. Li
Qian Wang
Man-Bin Shen
J.J. Zhu
Hanxiong Huang
Ming Zeng
Jia-Ming Li
Honghan Gong
J. W. Hu
Z. Y. Zhou
H. J. Yu
Yin Xu
V. D. Sharma
Manoj Kumar Singh
Hau-Bin Li
Source :
Physical Review Letters. 120
Publication Year :
2018
Publisher :
American Physical Society (APS), 2018.

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 8×10^{-42} and 3×10^{-36} cm^{2} at a 90% confidence level on spin-independent and spin-dependent WIMP-nucleon cross sections, respectively, at a WIMP mass (m_{χ}) of 5 GeV/c^{2} are achieved. The lower reach of m_{χ} is extended to 2 GeV/c^{2}.

Details

ISSN :
10797114 and 00319007
Volume :
120
Database :
OpenAIRE
Journal :
Physical Review Letters
Accession number :
edsair.doi...........6dd548e130a66cf630289f824577cebe
Full Text :
https://doi.org/10.1103/physrevlett.120.241301