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arXiv 0906.4119astro-ph.COastro-ph.HE
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利用ZEPLIN-II结果对非弹性暗物质信号的约束

Constraints on Inelastic Dark Matter Signal using ZEPLIN-II Results

D. B. Cline, W. Ooi, H. Wang

摘要:

人们对非弹性暗物质(iDM)的概念越来越感兴趣,部分原因是最近的一些数据。我们描述了从两相暗物质探测器ZEPLIN-II的结果中对iDM的约束,该探测器已经证明了强大的背景辨别能力(>98%)。使用先前发表的ZEPLIN-II残留背景估计值,此处给出的iDM限值排除了比未扣除背景的限值显著更大的iDM参数空间。此外,假设标准氙淬灭因子(qvod)为0.19,我们的ZEPLIN-II限值强烈表明在>99% C.L.时排除iDM信号声明,弱相互作用大质量粒子(WIMPs)质量>100 GeV。

英文摘要:

There has been an increasing interest on the concept of Inelastic Dark Matter (iDM) - motivated in part by some recent data. We describe the constraints on iDM from the results of the two phase dark matter detector ZEPLIN-II, which has demonstrated strong background discrimination capabilities (>98%). Using previously published estimates of the ZEPLIN-II residual background, the iDM limits presented here exclude a significantly larger iDM parameter space than the limits derived without background subtraction. Moreover, assuming standard xenon quenching factor (qXe) of 0.19, our ZEPLIN-II limits strongly suggest the exclusion of iDM signal claims at >99% C.L., for Weakly Interacting Massive Particles (WIMPs) masses >100 GeV.

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。

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