arXiv 2007.155552020-07hep-exhep-phphysics.ins-det

CDEX有效场论框架下对WIMP耦合的首次实验约束

First experimental constraints on WIMP couplings in the effective field theory framework from CDEX

Y. Wang, Z. Zeng, Q. Yue, L. T. Yang, K. J. Kang, Y. J. Li, M. Agartioglu, H. P. An, J. P. Chang, J. H. Chen, Y. H. Chen, J. P. Cheng, C. Y. Chiang, W. H. Dai, … 展开作者

Y. Wang, Z. Zeng, Q. Yue, L. T. Yang, K. J. Kang, Y. J. Li, M. Agartioglu, H. P. An, J. P. Chang, J. H. Chen, Y. H. Chen, J. P. Cheng, C. Y. Chiang, W. H. Dai, Z. Deng, C. H. Fang, X. P. Geng, H. Gong, Q. J. Guo, X. Y. Guo, H. J. He, L. He, S. M. He, J. W. Hu, T. C. Huang, H. X. Huang, H. T. Jia, L. P. Jia, X. Jiang, H. B. Li, J. M. Li, J. Li, M. X. Li, R. M. J. Li, X. Li, Y. L. Li, B. Liao, F. K. Lin, S. T. Lin, S. K. Liu, Y. D. Liu, Y. Liu, Y. Y. Liu, Z. Z. Liu, H. Ma, Y. C. Mao, Q. Y. Nie, J. H. Ning, H. Pan, N. C. Qi, J. Ren, X. C. Ruan, C. S. Shang, V. Sharma, Z. She, L. Singh, M. K. Singh, T. X. Sun, C. J. Tang, W. Y. Tang, Y. Tian, G. F. Wang, L. Wang, Q. Wang, Y. C. Wang, Y. X. Wang, Z. Wang, H. T. Wong, S. Y. Wu, Y. C. Wu, H. Y. Xing, Y. Xu, T. Xue, Y. L. Yan, N. Yi, C. X. Yu, H. J. Yu, J. F. Yue, M. Zeng, B. T. Zhang, L. Zhang, F. S. Zhang, Z. Y. Zhang, K. K. Zhao, M. G. Zhao, J. F. Zhou, Z. Y. Zhou, J. J. Zhu

备注：: version accepted by Science China-PMA, 8 pages, 8 figures
发表信息：: Sci. China-Phys. Mech. Astron. 64, 281011 (2021)
DOI：: 10.1007/s11433-020-1666-8

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摘要：

我们基于中国暗物质实验（CDEX）-1B和CDEX-10阶段的数据，给出了使用中国暗物质实验（CDEX）的两种有效场论方法进行的弱相互作用大质量粒子（WIMPs）搜索结果。在非相对论性有效场论方法中，采用时间积分和年调制分析，在90%置信水平（C. L.）并且在低$m_χ$区域中的电流边界上得到改善。在手征有效场论方法中，来自CDEX-10的数据被用于将WIMP-π介子耦合的上限设定为90% C. L。我们首次将极限扩展到$m_χ<$ 6 GeV/$c^2$区域。

英文摘要：

We present weakly interacting massive particles (WIMPs) search results performed using two approaches of effective field theory from the China Dark Matter Experiment (CDEX), based on the data from both CDEX-1B and CDEX-10 stages. In the nonrelativistic effective field theory approach, both time-integrated and annual modulation analyses were used to set new limits for the coupling of WIMP-nucleon effective operators at 90% confidence level (C.L.) and improve over the current bounds in the low $m_χ$ region. In the chiral effective field theory approach, data from CDEX-10 were used to set an upper limit on WIMP-pion coupling at 90% C.L. We for the first time extended the limit to the $m_χ<$ 6 GeV/$c^2$ region.

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