Search for low-mass WIMPs with EDELWEISS-II heat-and-ionization detectors
Search for low-mass WIMPs with EDELWEISS-II heat-and-ionization detectors
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使用 EDELWEISS-II 热电离探测器搜索低质量 WIMP
DOI：
10.1103/physrevd.86.051701
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发表时间：
2012
影响因子：
5
通讯作者：
Armengaud E
中科院分区：
文献类型：
--
作者：
Armengaud E
我们报告了使用Edelweiss在2009-2010年间从配备了热传感器的四个Ge探测器和允许有效地拒绝几个本底来源的电极设计(ID)收集的数据来搜索低能量()WIMP诱导的核反冲。数据表明，没有证据表明低能核反冲呈指数分布，这可以归因于WIMP在暴露后的弹性散射。对于质量为10GeV的弱相互作用大质量粒子(WIMP)，在WIMP搜索区观测到的一个事件导致了与自旋无关的WIMP-核子散射截面上90%的C.L.极限，这限制了与令人信服的、DAMA和CRESST实验报告的结果相关的参数空间。
We report on a search for low-energy () WIMP-induced nuclear recoils using data collected in 2009–2010 by EDELWEISS from four germanium detectors equipped with thermal sensors and an electrode design (ID) which allows to efficiently reject several sources of background. The data indicate no evidence for an exponential distribution of low-energy nuclear recoils that could be attributed to WIMP elastic scattering after an exposure of. For weakly interacting massive particles (WIMPs) of mass 10 GeV, the observation of one event in the WIMP search region results in a 90% C.L. limit ofon the spin-independent WIMP-nucleon scattering cross-section, which constrains the parameter space associated with the findings reported by the CoGeNT, DAMA and CRESST experiments.