Direct Detection Constraints on Dark Photons with the CDEX-10 Experiment at the China Jinping Underground Laboratory

Direct Detection Constraints on Dark Photons with the CDEX-10 Experiment at the China Jinping Underground Laboratory

We report constraints on the dark photon effective kinetic mixing parameter (κ) 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 κ of solar dark photon from 205.4 kg-day e...

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Veröffentlicht in:Physical review letters 2020-03, Vol.124 (11), p.111301-111301, Article 111301
Hauptverfasser: She, Z, Jia, L P, Yue, Q, Ma, H, Kang, K J, Li, Y J, Agartioglu, M, An, H P, Chang, J P, Chen, J H, Chen, Y H, Cheng, J P, Dai, W H, Deng, Z, Geng, X P, Gong, H, Gu, P, Guo, Q J, Guo, X Y, He, L, He, S M, He, H T, Hu, J W, Huang, T C, Huang, H X, Li, H B, Li, H, Li, J M, Li, J, Li, M X, Li, X, Li, X Q, Li, Y L, Liao, B, Lin, F K, Lin, S T, Liu, S K, Liu, Y D, Liu, Y Y, Liu, Z Z, Mao, Y C, Nie, Q Y, Ning, J H, Pan, H, Qi, N C, Qiao, C K, Ren, J, Ruan, X C, Sevda, B, Shang, C S, Sharma, V, Singh, L, 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, Wang, Z, Wong, H T, Wu, S Y, Xing, H Y, Xu, Y, Xue, T, Yan, Y L, Yang, L T, Yi, N, Yu, C X, Yu, H J, Yue, J F, Zeng, M, Zeng, Z, Zhang, B T, Zhang, L, Zhang, F S, Zhang, Z Y, Zhao, M G, Zhou, J F, Zhou, Z Y, Zhu, J J
Format: Artikel
Sprache:eng
Schlagworte:
Confidence intervals
Dark matter
Germanium
Laboratories
Parameters
Photons
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Zusammenfassung:We report constraints on the dark photon effective kinetic mixing parameter (κ) 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 κ 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 κ=1.3×10^{-15} at m_{V}=200  eV/c^{2}.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.124.111301