CDEX-10实验中的sub-GEV暗物质的限制 - 电子散射

论文标题

CDEX-10实验中的sub-GEV暗物质的限制 - 电子散射

Constraints on Sub-GeV Dark Matter--Electron Scattering from the CDEX-10 Experiment

论文作者

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

论文摘要

我们使用205.4千克$ \ cdot $ day DataSet从CDEX-10实验中提出了对子GEV暗物质的基于锗的约束 - 电子（$χ$ - $ e $）散射。使用新颖的计算技术，我们获得了可在高纯晶锗探测器中观察到的$χ$ -E $ E $散射光谱。在沉重的调解人方案中，与以前的基于锗的$χ$ -E $ $ $结果相比，我们的结果以$m_χ$大于80 meV/c $^2 $的$M_χ$的3个数量级改进。我们还提出了迄今为止使用固态探测器的$m_χ$ $m_χ$大于90 meV/c $^2 $的最严格的$χ$ -E $ E $横断面限制，带有重型介体和$ M_的$M_χ$大于100 meV/c $^2 $，带有电动偶极耦合。结果证明了可行性，并证明了在超级放射性背景中具有高纯晶锗探测器的新$χ$ -E $检测方法的巨大潜力。

We present improved germanium-based constraints on sub-GeV dark matter via dark matter--electron ($χ$-$e$) scattering using the 205.4 kg$\cdot$day dataset from the CDEX-10 experiment. Using a novel calculation technique, we attain predicted $χ$-$e$ scattering spectra observable in high-purity germanium detectors. In the heavy mediator scenario, our results achieve 3 orders of magnitude of improvement for $m_χ$ larger than 80 MeV/c$^2$ compared to previous germanium-based $χ$-$e$ results. We also present the most stringent $χ$-$e$ cross-section limit to date among experiments using solid-state detectors for $m_χ$ larger than 90 MeV/c$^2$ with heavy mediators and $m_χ$ larger than 100 MeV/c$^2$ with electric dipole coupling. The result proves the feasibility and demonstrates the vast potential of a new $χ$-$e$ detection method with high-purity germanium detectors in ultralow radioactive background.

下载PDF全文

下载文献需遵守相关版权规定

论文标题