论文标题
WIMP的不对称暗物质和Baryon不对称性
WIMP Cogenesis for Asymmetric Dark Matter and the Baryon Asymmetry
论文作者
论文摘要
我们提出了一种新的机制，其中不对称的暗物质（ADM）和Baryon不对称性都在其热冻结后的亚稳态弱相互作用的巨大粒子（WIMP）的相同衰减链中产生。暗物质和重子与保守的广义重子数相连，而DM不对称性和Baryon不对称彼此补偿。这个统一的框架解决了DM-Baryon的巧合，同时继承了传统的WIMP奇迹的优点，以预测物质的遗物丰富。提出了实现这种情况的可重新分配模型的示例。这些模型一般可以通过与标准模型夸克或卵子相互作用的GEV尺度的子GEV预测ADM，从而在直接检测实验中呈现对低质量DM敏感的潜在特征。还讨论了其他有趣的现象学预测，包括：具有颜色或电荷电荷的新中间颗粒的LHC特征和DM诱导的核子衰变；长寿的w imp可能在未来的高能对撞机实验的范围内。
We propose a new mechanism where asymmetric dark matter (ADM) and the baryon asymmetry are both generated in the same decay chain of a metastable weakly interacting massive particle (WIMP) after its thermal freeze-out. Dark matter and baryons are connected by a generalized baryon number that is conserved, while the DM asymmetry and baryon asymmetry compensate each other. This unified framework addresses the DM-baryon coincidence while inheriting the merit of the conventional WIMP miracle in predicting relic abundances of matter. Examples of renormalizable models realizing this scenario are presented. These models generically predict ADM with sub-GeV to GeV-scale mass that interacts with Standard Model quarks or leptons, thus rendering potential signatures at direct detection experiments sensitive to low mass DM. Other interesting phenomenological predictions are also discussed, including: LHC signatures of new intermediate particles with color or electroweak charge and DM induced nucleon decay; the long-lived WIMP may be within reach of future high energy collider experiments.
