New constraints on spin-dependent WIMP-neutron interactions from HDMS with natural Ge and 73Ge
New constraints on spin-dependent WIMP-neutron interactions from HDMS with natural Ge and 73Ge
复制标题
HDMS 与天然 Ge 和 73Ge 的自旋相关 WIMP 中子相互作用的新约束
DOI：
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发表时间：
2008
期刊：
影响因子：
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通讯作者：
I. Krivosheina
中科院分区：
文献类型：
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作者：
V. Bednyakov;H. Klapdor;I. Krivosheina
在混合自旋-标量耦合方法中，同时分析了1996、1997、2001-2003年海德堡暗物质搜索实验（HDMS）中天然Ge和富集73 Ge的数据。这种分析与一个新的程序，从测得的73 Ge光谱的背景识别和减法，使我们能够获得一个显着的（约一个数量级）的改进的限制WIMP中子自旋相关的耦合。因此，HDMS实验现在给出了WIMP质量大于60-65 GeV/c2的WIMP-中子自旋耦合的最灵敏极限。
In the mixed spin-scalar coupling approach the data from HDMS (Heidelberg Dark Matter Search) experiments performed in the years 1996, 1997, 2001–2003 both with natural Ge and with enriched 73Ge were simultaneously analyzed. This analysis together with a new procedure for background identification and subtraction from the measured 73Ge spectrum allowed us to obtain a significant (about one order of magnitude) improvement for the limits on the WIMP-neutron spin-dependent coupling. As a result, the HDMS experiment is now giving the most sensitive limits on the WIMP-neutron spin coupling for WIMP masses larger than 60–65 GeV/c2.