Astrophysical uncertainties of dark matter direct detection experiments
Astrophysical uncertainties of dark matter direct detection experiments
复制标题
DOI：
10.1103/physrevd.82.023530
复制
发表时间：
2010-05
影响因子：
5
通讯作者：
C. McCabe
中科院分区：
文献类型：
--
作者：
C. McCabe
在三种情况下研究了天体物理不确定性对暗物质直接探测实验排除极限的影响：弹性暗物质、动量依赖型和非弹性散射暗物质。我们发现，改变暗物质银河逃逸速度和太阳的圆周速度会导致光（≲ 10 GeV）弹性和非弹性散射暗物质的排除极限发生显着变化。我们还使用从 Via Lactea II 和 GHALO N 体模拟中提取的 100 个速度分布来计算限制，并发现具有相同天体物理参数的麦克斯韦-玻尔兹曼分布通常设置较少的约束限制。在天体物理参数和速度分布形式变化的情况下，对于质量≥ 50 GeV 的弹性和动量相关限制仍然保持稳健。
The effects of astrophysical uncertainties on the exclusion limits at dark matter direct detection experiments are investigated for three scenarios: elastic, momentum dependent, and inelastically scattering dark matter. We find that varying the dark matter galactic escape velocity and the Sun's circular velocity can lead to significant variations in the exclusion limits for light (≲ 10 GeV) elastic and inelastic scattering dark matter. We also calculate the limits using 100 velocity distributions extracted from the Via Lactea II and GHALO N-body simulations and find that a Maxwell-Boltzmann distribution with the same astrophysical parameters generally sets less constraining limits. The elastic and momentum dependent limits remain robust for masses ≳ 50 GeV under variations of the astrophysical parameters and the form of the velocity distribution.