通过在CDEX-10实验中搜索从蒸发原始黑洞中搜索kev-mev轻质的暗物质颗粒

论文标题

通过在CDEX-10实验中搜索从蒸发原始黑洞中搜索kev-mev轻质的暗物质颗粒

Search for boosted keV-MeV light dark matter particles from evaporating primordial black holes at the CDEX-10 experiment

论文作者

Zhang, Z. H., Yang, L. T., Yue, Q., Kang, K. J., Li, Y. J., An, H. P., C., Greeshma, 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., Karmakar, S., 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, J. X., 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., 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. F., Wang, Y. X., Wong, H. T., Wu, S. Y., Wu, Y. C., Xing, H. Y., Xu, R., Xu, Y., Xue, T., Yan, Y. L., 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. Y., 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 kg $ \ cdot $ Day数据从中国jinating Underground Laboratory的CDEX-10 p-type Point Point Point Distector与160 EVE Evee Anallyss Anally threshshshesshesshesshesshesshesshesshesshesshesshesshesshesshesshesshesshesshessheme提出了对增强的轻质暗物质颗粒（表示为``$χ$'''）的新限制（称为``$χ$'''）。从1 $ \ times $ 10 $^{15} $ g到7 $ \ times $ 10 $^{16} $ g的$χ$从1 $ \ times $ 10 $^{15} $ g到7 $ \ times $ \ times。在与当前界限兼容的PBH的存在下，我们的结果不包括$χ$ -Nucleon弹性散落的横截面区域，从3.4 $ \ times $ 10 $ 10 $^{ - 32} $ cm $^{2} $^{2} $ 2.3 $ \ times $^times $ 10 $^{ - 29 $^{ - 29} $ cm $^$ cm $^$^2} with masses of 5$\times$10$^{15}$ g, as well as from 1.1$\times$10$^{-28}$ cm$^{2}$ to 7.6$\times$10$^{-28}$ cm$^{2}$ for $χ$ of 1 keV to 0.6 MeV from PBHs with masses of 7$\times$10$^{16}$ g。如果将来可以确定$χ$ -Nucleon弹性散布截面，那么PBHS的丰度可能会受到$χ$蒸发的严重限制。与先前使用的实验相比，随着CDEX-10实验的较低阈值（160 EVEE），这项工作使PBHS产生的软光谱可以更好地覆盖，这表明了这种技术途径的巨大潜力，可以从较大的PBHS较低的PBHS追求$χ$。

We present novel constraints on boosted light dark matter particles (denoted as ``$χ$'') from evaporating primordial black holes (PBHs) using 205.4 kg$\cdot$day data from the China Jinping Underground Laboratory's CDEX-10 p-type point contact germanium detector with a 160 eVee analysis threshold. $χ$ from PBHs with masses ranging from 1$\times$10$^{15}$ g to 7$\times$10$^{16}$ g are searched in this work. In the presence of PBH abundance compatible with present bounds, our result excludes the $χ$-nucleon elastic-scattering cross section region from 3.4$\times$10$^{-32}$ cm$^{2}$ to 2.3$\times$10$^{-29}$ cm$^{2}$ for $χ$ of 1 keV to 24 MeV from PBHs with masses of 5$\times$10$^{15}$ g, as well as from 1.1$\times$10$^{-28}$ cm$^{2}$ to 7.6$\times$10$^{-28}$ cm$^{2}$ for $χ$ of 1 keV to 0.6 MeV from PBHs with masses of 7$\times$10$^{16}$ g. If the $χ$-nucleon elastic-scattering cross section can be determined in the future, the abundance of PBHs may be severely constrained by $χ$ evaporation. With the lower threshold (160 eVee) of the CDEX-10 experiment compared to the previously used experiments, this work allows for a better reach at soft spectra produced by heavier PBHs, which demonstrates the vast potential of such a technical route to pursue $χ$ from larger PBHs with a low threshold.

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