论文标题
部分可观测时空混沌系统的无模型预测
Linear Sigma Dark Matter
论文作者
论文摘要
我们基于QCD般的理论提出了一种自我相互作用的暗物质模型，并受到$ a_0（980 \ pm 20）$的接近性启发。暗物质由深色旋转组成，它们通过$σ$共振接近$ππ$阈值而自散是。尽管线性Sigma模型是定性指南，但有效范围理论给出了对强耦合体制中散射的完全统一描述。动力学混合的深色光子的引入使深色锥子冻结或-inin。我们研究了可行的参数空间，该空间解释了观察到的遗物丰度，同时逃避了所有当前约束。搜索在不同尺度，（in）直接检测信号的暗物质自我相互作用，并且（in）明显销售的深色光子将在不久的将来测试该模型。
We present a model of self-interacting dark matter based on QCD-like theories and inspired by the proximity of $a_0(980\pm 20)$ to the $K\bar{K}(990)$ threshold. Dark matter is comprised of dark pions which self-scatter via the $σ$ resonance close to the $ππ$ threshold. While the linear sigma model serves as a qualitative guide, a fully unitary description of the scattering in the strongly coupled regime is given by effective range theory. The introduction of a kinetically mixed dark photon allows the dark pion to either freeze-out or -in. We study the viable parameter space which explains the observed relic abundance while evading all current constraints. Searches for dark matter self interactions at different scales, (in)direct detection signals, and (in)visibly-decaying dark photons will test this model in the near future.
