利用氙和氩靶探测复合希格斯模型中的狄拉克暗物质
Probing Dirac Dark Matter in Composite Higgs Models with Xenon and Argon targets
AI总结：
该研究在复合希格斯模型框架下，探讨了利用氙、氩靶的直接探测实验，寻找具有非零磁偶极矩的狄拉克暗物质，确定了ξ≥0.1时可能观测到其增强信号的参数空间区域及区分其他暗物质的可观测量。
AI中文摘要：
直接探测（DD）实验的最新进展推动了对暗物质（DM）与核子及原子核相互作用的研究。在复合希格斯模型（CHMs）的框架内，最轻的狄拉克复合粒子（LDCP）可以保持稳定，构成观测到的暗物质遗迹丰度的显著部分ξ。我们考虑了CHM中LDCP与核子以及氙（Xe）、氩（Ar）原子核的弹性散射，其中LDCP的磁矩、质量及其与希格斯二重态的耦合受近似U(1)对称性抑制。具有非零磁偶极矩的LDCP会导致DD实验中原子核低反冲能下的微分事例率显著增强。假设ξ≥0.1，我们确定了该增强可能被潜在观测到的参数空间区域。此外，我们还明确了一些可用于区分具有非零磁偶极矩的暗物质费米子与其他无类似电磁性质的暗物质粒子的可观测量。
英文摘要：
Recent advancements in direct detection (DD) experiments stimulate the investigation of the interactions of dark matter (DM) with nucleons and nuclei. In the framework of Composite Higgs Models (CHMs) the lightest Dirac composite particle (LDCP) can be stable composing a significant fraction ξof the observed DM relic abundance. We consider the elastic scattering of the LDCP on nucleons as well as on xenon (Xe) and argon (Ar) nuclei within the CHMs in which the LDCP magnetic moment, its mass and its coupling to the Higgs doublet are suppressed by an approximate U(1) symmetry. The LDCP with non-zero magnetic dipole moment can result in a substantial enhancement of the differential event rate in the DD experiments at low recoil energies of nuclei. Assuming ξ\ge 0.1, we identify the region of the parameter space where such enhancement may be potentially observable. In addition we specify some observables that can be useful in discriminating between the DM fermions with non-zero magnetic moment and other types of dark matter particles which don't have similar electromagnetic properties.
