For the last 10 years, the search for dark matter (DM) was carried out taking into account the fact that the DM particles are WIMPs (Weakly Interacted Massive Particles) which were introduced in supersymmetric extensions of the Standard Model. Many experiments such as XENON1T, DarkSide, CRESST, etc. set the constraints on the WIMP-nucleon elastic interaction cross sections for different assumed WIMP masses. Methods for detecting WIMPs could play a special role, allowing one to determine the directions of the tracks of recoil nuclei and, therefore, to determine the preferred direction of the WIMP flux. In this work, we analyze the capabilities of such direct detection experiments through analyzing the lengths and directions of the tracks of recoil nuclei. Taking into account the existing experimental constraints, we conclude that the optimal target would be a lower density target containing nuclei of the CNO group, for example, liquid propane.

中文翻译：

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光目标实验中冷暗物质粒子 (WIMP) 的定向观测

在过去的 10 年中，暗物质 (DM) 的搜索是考虑到暗物质 (DM) 粒子是 WIMP（弱相互作用大质量粒子）的事实，这些粒子是在标准模型的超对称扩展中引入的。许多实验，如 XENON1T、DarkSide、CRESST 等，为不同的假设 WIMP 质量设置了 WIMP-核子弹性相互作用截面的约束。检测 WIMP 的方法可以发挥特殊作用，可以确定反冲核的轨迹方向，从而确定 WIMP 通量的首选方向。在这项工作中，我们通过分析反冲核轨迹的长度和方向来分析这种直接检测实验的能力。考虑到现有的实验限制，