论文标题
紫外线冻结重生发生
Ultraviolet freeze-in baryogenesis
论文作者
论文摘要
我们研究了一种机制，可以通过观察到的宇宙的重子不对称同时解释宇宙暗物质密度。我们的提案的核心是浴粒子的不平衡散射过程，这些池颗粒负责产生虚弱的暗物质。相同的过程违反了$ CP $，这进一步导致了可见行业中物质和反物质之间的不对称性。我们关注的是通过不可鉴定的算子来描述这些相互作用的可能性，这既导致暗物质和在高温下产生的baryon不对称性。通过研究两个混凝土场景，一种涉及标量，一种涉及费米式暗物质来体现该机制。我们发现，在这两种情况下，只要暗物质在KeV质量范围内，就可以实现对暗物质含量和物质抗对称的不对称性的共同解释。
We study a mechanism through which the cosmic dark matter density can be explained simultaneously with the observed baryon asymmetry of the Universe. At the core of our proposal lie the out-of-equilibrium scattering processes of bath particles which are responsible for the production of feebly-interacting dark matter. The same processes violate $CP$, which further leads to an asymmetry between matter and antimatter being generated in the visible sector. We focus on the possibility that these interactions are described through non-renormalizable operators, which leads to both dark matter and the baryon asymmetry being produced at high temperatures. The mechanism is exemplified by studying two concrete scenarios, one involving scalar and one involving fermion dark matter. We find that in both cases it is, indeed, possible to achieve a common explanation for the dark matter content and the matter-antimatter asymmetry of the Universe, provided that dark matter is in the keV mass range.
