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arXiv 1404.3443astro-ph.COhep-exphysics.ins-det
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用CsI(Tl)晶体探测器寻找低质量暗物质

Search for Low-Mass Dark Matter with CsI(Tl) Crystal Detectors

H. S. Lee, H. Bhang, J. H. Choi, S. Choi, I. S. Hahn, E. J. Jeon, H. W. Joo, W. G. Kang, B. H. Kim, G. B. Kim, H. J. Kim, J. H. Kim, K. W. Kim, S. C. Kim, S. K.… 展开作者

H. S. Lee, H. Bhang, J. H. Choi, S. Choi, I. S. Hahn, E. J. Jeon, H. W. Joo, W. G. Kang, B. H. Kim, G. B. Kim, H. J. Kim, J. H. Kim, K. W. Kim, S. C. Kim, S. K. Kim, Y. D. Kim, Y. H. Kim, J. H. Lee, J. K. Lee, S. J. Lee, D. S. Leonard, J. Li, J. Li, Y. J. Li, X. R. Li, S. S. Myung, S. L. Olsen, J. W. Park, I. S. Seong, J. H. So, Q. Yue

摘要:

我们提出了一个搜索低质量($\leq 20 GeV/c^{2}$)弱相互作用大质量粒子(WIMPs),强有力的候选人的暗物质粒子,使用低背景CsI(Tl)的韩国不可见的质量搜索(KIMS)实验的探测器阵列。利用24,324.3kg $\cdot$天的总数据曝光量,我们寻找了由WIMP-核弹性散射产生的核反冲产生的WIMP相互作用信号,其可见能量为2 - 4keV。观测到的候选事件的能量分布与零信号一致,WIMP-质子自旋无关相互作用的上限设定为90%的置信水平。所观察到的限制拒绝大部分的低质量区域的参数空间有利于DAMA年度调制信号。

英文摘要:

We present a search for low-mass ($\leq 20 GeV/c^{2}$) weakly interacting massive particles(WIMPs), strong candidates of dark matter particles,using the low-background CsI(Tl) detector array of the Korea Invisible Mass Search (KIMS) experiment. With a total data exposure of 24,324.3kg$\cdot$days,we search for WIMP interaction signals produced by nuclei recoiling from WIMP-nuclear elastic scattering with visible energies between 2 and 4keV. The observed energy distribution of candidate events is consistent with null signals, and upper limits of the WIMP-proton spin-independent interaction are set with a 90% confidence level. The observed limit rejects most of the low mass region of parameter space favored by the DAMA annual modulation signal.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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