Dark matter search experiment with CaF2(Eu) scintillator at Kamioka Observatory

Dark matter search experiment with CaF2(Eu) scintillator at Kamioka Observatory
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DOI:
10.1016/j.physletb.2005.12.025
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发表时间:
2005-10
期刊:
影响因子:
4.4
通讯作者:
Y. Shimizu;M. Minowa;W. Suganuma;Y. Inoue
Y. Shimizu;M. Minowa;W. Suganuma;Y. Inoue
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Y. Shimizu;M. Minowa;W. Suganuma;Y. Inoue

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我们报告了最近在神冈天文台使用310 g CaF2(Eu)闪烁体进行的WIMP暗物质搜索实验的结果。我们选择了高放射性纯晶体,pmt和辐射屏蔽,使本底速率大大降低。我们推导了自旋相关的wimp -质子和wimp -中子耦合系数的极限。该极限排除了DAMA NaI实验年度调制观测所允许的部分参数空间。
We report recent results of a WIMP dark matter search experiment using 310 g of CaF2(Eu) scintillator at Kamioka Observatory. We chose a highly radio-pure crystal, PMTs and radiation shields, so that the background rate decreased considerably. We derived limits on the spin dependent WIMP-proton and WIMP-neutron coupling coefficients, apand an. The limits excluded a part of the parameter space allowed by the annual modulation observation of the DAMA NaI experiment.