arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1303.0925hep-exastro-ph.COphysics.ins-det
收藏

WIMP暗物质与p型点接触锗探测器自旋无关耦合的极限

Limits on spin-independent couplings of WIMP dark matter with a p-type point-contact germanium detector

TEXONO Collaboration

摘要:

本文报道了在国胜反应堆中微子实验室用840 g基准质量的p型点接触锗探测器获得的39.5 kg-天的数据对自旋无关的WIMP-核子相互作用截面的新限制。这项研究的关键是选择程序的理解,特别是,在sub-keV范围内的散装表面事件分化。用校准γ源和新型n型点接触锗探测器测量了信号保留和背景抑制效率。部分参数空间的横截面与WIMP质量暗示的各种实验进行了探讨和排除。

英文摘要:

We report new limits on spin-independent WIMP-nucleon interaction cross-section using 39.5 kg-days of data taken with a p-type point-contact germanium detector of 840 g fiducial mass at the Kuo-Sheng Reactor Neutrino Laboratory. Crucial to this study is the understanding of the selection procedures and, in particular, the bulk-surface events differentiation at the sub-keV range. The signal-retaining and background-rejecting efficiencies were measured with calibration gamma sources and a novel n-type point-contact germanium detector. Part of the parameter space in cross-section versus WIMP-mass implied by various experiments is probed and excluded.

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。

↑