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arXiv 1206.2693astro-ph.COhep-ph
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量化天体物理对暗物质直接探测结果的解释

Quantifying Astrophysical Uncertainties on Dark Matter Direct Detection Results

Malcolm Fairbairn, Tom Douce, Jace Swift

摘要:

由于我们对星系中的暗物质相空间缺乏了解,我们试图估计自旋无关的暗物质-核子截面的约束的不确定性。我们先拟合暗物质的密度,然后再研究与这些拟合相兼容的Jeans方程的可能解,以了解我们在太阳半径处可能期望的速度色散。我们考虑到非麦克斯韦速度分布的可能性和一个黑暗的磁盘的可能存在。结合所有这些影响,我们仍然发现,在解释的直接检测实验的高(>100 GeV)质量的暗物质候选人的不确定性是小于一个数量级的截面。

英文摘要:

We attempt to estimate the uncertainty in the constraints on the spin independent dark matter-nucleon cross section due to our lack of knowledge of the dark matter phase space in the galaxy. We fit the density of dark matter before investigating the possible solutions of the Jeans equation compatible with those fits in order to understand what velocity dispersions we might expect at the solar radius. We take into account the possibility of non-Maxwellian velocity distributions and the possible presence of a dark disk. Combining all these effects, we still find that the uncertainty in the interpretation of direct detection experiments for high (>100 GeV) mass dark matter candidates is less than an order of magnitude in cross section.

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