1. Constraints on Axion couplings from the CDEX-1 experiment at the China Jinping Underground Laboratory
- Author
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Liu, S. K., Yue, Q., Kang, K. J., Cheng, J. P., Wong, H. T., Li, Y. J., Li, H. B., Lin, S. T., Chang, J. P., Chen, J. H., Chen, N., Chen, Q. H., Chen, Y. H., Deng, Z., Du, Q., Gong, H., He, H. J., He, Q. J., Huang, H. X., Jiang, H., Li, J. M., Li, J., Li, X., Li, X. Q., Li, X. Y., Li, Y. L., Lin, F. K., Lü, L. C., Ma, H., Ma, J. L., Mao, S. J., Qin, J. Q., Ren, J., Ruan, X. C., Sharma, V., Shen, M. B., Singh, L., Singh, M. K., Soma, A. K., Su, J., Tang, C. J., Wang, J. M., Wang, L., Wang, Q., Wu, S. Y., Wu, Y. C., Xianyu, Z. Z., Xiao, R. Q., Xing, H. Y., Xu, F. Z., Xu, Y., Xu, X. J., Xue, T., Yang, C. W., Yang, L. T., Yang, S. W., Yi, N., Yu, C. X., Yu, H., Yu, X. Z., Zeng, X. H., Zeng, Z., Zhang, L., Zhang, Y. H., Zhao, M. G., Zhao, W., Zhou, Z. Y., Zhu, J. J., Zhu, W. B., Zhu, X. Z., and Zhu, Z. H.
- Subjects
High Energy Physics - Experiment ,High Energy Physics - Phenomenology ,Physics - Instrumentation and Detectors - Abstract
We report the results of searches for solar axions and galactic dark matter axions or axion-like particles with CDEX-1 experiment at the China Jinping Underground Laboratory, using 335.6 kg-days of data from a p-type point-contact germanium detector. The data are compatible with the background model and no excess signals are observed. Limits of solar axions on the model independent coupling $g_{Ae}<2.5\times10^{-11}$ from Compton, bremsstrahlung, atomic-recombination and deexcitation channel and $g^{\text{eff}}_{AN}\times g_{Ae}<6.1\times10^{-17}$ from $^{57}$Fe M1 transition at 90 % confidence level are derived. Within the framework of the DFSZ and KSVZ models, our results exclude the axion mass heavier than 0.9 eV/c$^{2}$ and 173 eV/c$^{2}$, respectively. The derived constraints for dark matter axions below 1 keV improves over the previous results., Comment: 8 pages, 8 figures
- Published
- 2016
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