1. Direct Detection Constraints on Dark Photons with the CDEX-10 Experiment at the China Jinping Underground Laboratory
- Author
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C. X. Yu, B. T. Zhang, X. P. Geng, Hao-Yang Xing, Hanxiong Huang, Honghan Gong, J. Li, Qian Yue, Y. D. Liu, Y. Li, Tian Xue, W. Y. Tang, Yang Tian, M. X. Li, K. Kang, B. Sevda, Y. Y. Liu, Cong-Feng Qiao, X. C. Ruan, L. T. Yang, F. K. Lin, L. P. Jia, Zhenyu Zhang, Lei Wang, J. F. Zhou, T. C. Huang, Yan Wang, J. P. Chang, Lakhwinder Singh, Y. C. Mao, H. T. He, Q. Y. Nie, X. Q. Li, M. Agartioglu, Shin-Ted Lin, Z. She, N. C. Qi, M. G. Zhao, G. F. Wang, Q. J. Guo, Y. L. Yan, X. Y. Guo, X. N. Li, Ming Zeng, Feng-Shou Zhang, H. B. Li, Qian Wang, Shengzhou Wu, J. Cheng, Yuanjing Li, Ye Chen, Tianxi Sun, J. W. Hu, N. Yi, Z. Y. Zhou, S. M. He, L. He, Zhi Zeng, H. J. Yu, J.J. Zhu, Y. Wang, C. S. Shang, B. Liao, P. Gu, V. Sharma, Zuowei Liu, Jia-Ming Li, Lei Zhang, Wei Dai, H. P. An, H. Pan, Zhao-Qi Wang, Yin Xu, Zhi Deng, Manoj Kumar Singh, J. H. Ning, Hau-Bin Li, Hao Ma, Jun Ren, Henry T. Wong, S. K. Liu, C. J. Tang, Jing-Han Chen, and J. F. Yue
- Subjects
Physics ,Physics - Instrumentation and Detectors ,Photon ,Dark matter ,China Jinping Underground Laboratory ,FOS: Physical sciences ,General Physics and Astronomy ,chemistry.chemical_element ,Germanium ,Instrumentation and Detectors (physics.ins-det) ,Parameter space ,Kinetic energy ,01 natural sciences ,Dark photon ,High Energy Physics - Experiment ,Nuclear physics ,High Energy Physics - Phenomenology ,High Energy Physics - Experiment (hep-ex) ,High Energy Physics - Phenomenology (hep-ph) ,chemistry ,0103 physical sciences ,010306 general physics ,Mixing (physics) - Abstract
We report constraints on the dark photon effective kinetic mixing parameter (${\kappa}$) with data taken from two ${p}$-type point-contact germanium detectors of the CDEX-10 experiment at the China Jinping Underground Laboratory. The 90\% confidence level upper limits on ${\kappa}$ of solar dark photon from 205.4 kg-day exposure are derived, probing new parameter space with masses (${m_V}$) from 10 to 300 eV/${c^2}$ in direct detection experiments. Considering dark photon as the cosmological dark matter, limits at 90\% confidence level with ${m_V}$ from 0.1 to 4.0 keV/${c^2}$ are set from 449.6 kg-day data, with a minimum of ${\rm{\kappa=1.3 \times 10^{-15}}}$ at ${\rm{m_V=200\ eV/c^2}}$., Comment: 5 pages, 6 figures
- Published
- 2020