Extending the discovery potential for inelastic-dipole dark matter with FASER
Extending the discovery potential for inelastic-dipole dark matter with FASER
复制标题
DOI：
10.1103/physrevd.107.115006
复制
发表时间：
2023-01
影响因子：
5
通讯作者：
K. Dienes;Jonathan L. Feng;Max Fieg;Fei Huang;Seung J. Lee;B. Thomas
中科院分区：
文献类型：
--
作者：
K. Dienes;Jonathan L. Feng;Max Fieg;Fei Huang;Seung J. Lee;B. Thomas
众所周知，中性粒子很难通过电磁相互作用观察到。因此，它们自然地避开了大多数对撞机探测器的探测。在本文中，我们指出，通过偶极相互作用相互作用的中性粒子仍然可以在设计用于寻找长寿命粒子（LLP）的远距离探测器中检测到。与以前的分析，集中在中性粒子的弹性相互作用，我们认为非弹性相互作用。这自然会导致LLP，我们证明，FASER（和未来的实验在前进物理设施）将能够探测相关的参数空间的实质性区域。特别是，我们发现，FASER是能够探测的参数空间的区域，其中热冻结产生的$\mathcal{O}$（GeV）的暗物质候选人与适当的遗物丰度，以及参数空间的区域，难以探测在固定目标实验。因此，FASER及其后续实验可能在发现这种暗物质候选者方面发挥关键作用。
Neutral particles are notoriously difficult to observe through electromagnetic interactions. As a result, they naturally elude detection in most collider detectors. In this paper, we point out that neutral particles that interact through a dipole interaction can nevertheless be detected in far-forward detectors designed to search for long-lived particles (LLPs). In contrast to previous analyses that focused on neutral particles with elastic interactions, we consider inelastic interactions. This naturally leads to LLPs, and we demonstrate that FASER (and future experiments at the Forward Physics Facility) will be able to probe substantial regions of the associated parameter space. In particular, we find that FASER is capable of probing the region of parameter space wherein thermal freeze-out gives rise to an $\mathcal{O}$(GeV) dark-matter candidate with the appropriate relic abundance, as well as regions of parameter space that are difficult to probe at fixed-target experiments. FASER and its successor experiments may therefore play a critical role in the discovery of such a dark-matter candidate.