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arXiv 1111.0292hep-phastro-ph.CO
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解决暗物质直接探测中的天体物理学不确定性

Resolving astrophysical uncertainties in dark matter direct detection

Mads T. Frandsen, Felix Kahlhoefer, Christopher McCabe, Subir Sarkar, Kai Schmidt-Hoberg

摘要:

我们研究了银河系暗物质粒子的假设速度分布对核反冲探测器结果解释的影响。通过将实验数据转换为变量,使天体物理学的未知数变得明确,不同的实验可以在没有关于暗物质晕的隐含假设的情况下进行比较。我们扩展这个框架,包括年度调制信号,以及多个目标元素。最近的结果DAMA,CoGeNT和CRESST-II可以带入协议,如果速度分布是非常各向异性的,从而允许一个大的调制分数。然而,CDMS和XENON的限制不能通过单独诉诸这种天体物理不确定性来回避。

英文摘要:

We study the impact of the assumed velocity distribution of galactic dark matter particles on the interpretation of results from nuclear recoil detectors. By converting experimental data to variables that make the astrophysical unknowns explicit, different experiments can be compared without implicit assumptions concerning the dark matter halo. We extend this framework to include the annual modulation signal, as well as multiple target elements. Recent results from DAMA, CoGeNT and CRESST-II can be brought into agreement if the velocity distribution is very anisotropic and thus allows a large modulation fraction. However constraints from CDMS and XENON cannot be evaded by appealing to such astrophysical uncertainties alone.

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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