论文标题
用各向异性响应函数对暗物质的定向检测
Directional detection of dark matter with anisotropic response functions
论文作者
论文摘要
sub-GEV暗物质的直接检测正在迅速发展，许多新颖的实验思想和理论方法出现了。在这项工作中，我们扩展了暗物质散射的介电形式，以结合各向异性材料响应，从而可以使用广泛的目标材料进行方向敏感的实验。使用各向异性电子气体的简单模型，我们证明了多体效应（例如等离子体）的重要性，并表明，即使暗物质动能也比等离子体能量小得多，但各向异性等离子体的尾巴仍然可以产生可观的每日调节。我们强调建立目标响应所需的相关实验技术，以及提取真正没有建模不确定性的响应功能的挑战。
Direct detection for sub-GeV dark matter is developing rapidly, with many novel experimental ideas and theoretical methods emerging. In this work, we extend the dielectric formalism for dark matter scattering to incorporate anisotropic material responses, enabling directionally-sensitive experiments with a broad class of target materials. Using a simple model of an anisotropic electron gas, we demonstrate the importance of many-body effects such as the plasmon, and show that even when the dark matter kinetic energies are much smaller than the plasmon energy, the tail of an anisotropic plasmon can still produce a sizeable daily modulation. We highlight the relevant experimental techniques required to establish the target response, as well as the challenges in extracting a response function which is truly free of modeling uncertainties.
