Limits on the WIMP-nucleon coupling coefficients from dark matter search experiment with NaF bolometer
Limits on the WIMP-nucleon coupling coefficients from dark matter search experiment with NaF bolometer
复制标题
NaF测辐射热计暗物质搜索实验对WIMP-核子耦合系数的限制
DOI：
10.1016/j.physletb.2003.07.090
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发表时间：
2003
影响因子：
4.4
通讯作者：
Y. Ootuka
中科院分区：
文献类型：
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作者：
A. Takeda;M. Minowa;K. Miuchi;H. Sekiya;Y. Shimizu;Y. Inoue;W. Ootani;Y. Ootuka
从2002年到2003年，我们在神冈天文台（2700 m.w.e）用氟化钠（NaF）辐射热计阵列进行了地下暗物质搜索实验。辐射热计阵列由8个总质量为176 g的NaF吸收器组成，每个吸收器上都粘有敏感的NTD锗热敏电阻。本实验旨在通过自旋依赖相互作用直接探测弱相互作用大质量粒子（wimp）。在3.38 kg d的暴露条件下，我们推导出了wimp -核子耦合系数的极限。这些限制证实并加强了我们以前用氟化锂（liff）辐射量计得出的结果。我们的结果排除了与UKDMC实验中Nal探测器得到的结果互补的参数空间。
We have performed the underground dark matter search experiment with a sodium fluoride (NaF) bolometer array from 2002 through 2003 at Kamioka Observatory (2700 m.w.e.). The bolometer array consists of eight NaF absorbers with a total mass of 176 g, and sensitive NTD germanium thermistors glued to each of them. This experiment aims for the direct detection of weakly interacting massive particles (WIMPs) via spin-dependent interaction. With an exposure of 3.38 kg days, we derived the limits on the WIMP–nucleon coupling coefficients, apand an. These limits confirmed and tightened those derived from our previous results with the lithium fluoride (LiF) bolometer. Our results excluded the parameter space complementary to the results obtained by Nal detectors of UKDMC experiment.