Extending the CRESST-II commissioning run limits to lower masses
Extending the CRESST-II commissioning run limits to lower masses
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DOI：
10.1103/physrevd.85.021301
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发表时间：
2011-09
影响因子：
5
通讯作者：
A. Brown;S. Henry;H. Kraus;C. McCabe
中科院分区：
文献类型：
--
作者：
A. Brown;S. Henry;H. Kraus;C. McCabe
受最近对质量 ~O(10 GeV) 的轻 WIMP 的兴趣的推动，提出了由 CRESST-II 调试运行（2007 年）产生的弹性、自旋无关的 WIMP 核子横截面限制的扩展。此前，这些数据用于将横截面限制从 1000 GeV 降至约 17 GeV，使用钨反冲，在钨酸钙暴露 47.9 kg-day 的情况下。在这里，使用先前发布的猝灭因子重建氧和钙带与调试运行数据集的接受区域的重叠。由此产生的弹性 WIMP 截面限制（考虑了氧和钙的额外暴露）低至 5 GeV。
Motivated by the recent interest in light WIMPs of mass ~O(10 GeV), an extension of the elastic, spin-independent WIMP-nucleon cross-section limits resulting from the CRESST-II commissioning run (2007) are presented. Previously, these data were used to set cross-section limits from 1000 GeV down to ~17 GeV, using tungsten recoils, in 47.9 kg-days of exposure of calcium tungstate. Here, the overlap of the oxygen and calcium bands with the acceptance region of the commissioning run data set is reconstructed using previously published quenching factors. The resulting elastic WIMP cross section limits, accounting for the additional exposure of oxygen and calcium, are presented down to 5 GeV.