论文标题
冻结的重生生成和暗物质
Baryogenesis and Dark Matter from Freeze-In
论文作者
论文摘要
我们提出了一个简单的模型，其中Baryon不对称性和暗物质是通过QCD-Triplet标量的衰减而产生的，其中至少一个必须在TEV质量范围内。在这些衰变中产生的单线费米子构成了暗物质。这些单元永远不会达到平衡，它们的相干产生，繁殖和歼灭会产生重子不对称。我们发现，平衡状态和暗物质密度约束通常要求最轻的标量寿命，从而为当前和即将到来的山脉提供了良好的检测或排除前景。在概括Akhmedov，Rubakov和Smirnov的瘦化机制时，我们的模型扩大了低规模男性生成的现象学可能性。
We propose a simple model in which the baryon asymmetry and dark matter are created via the decays and inverse decays of QCD-triplet scalars, at least one of which must be in the TeV mass range. Singlet fermions produced in these decays constitute the dark matter. The singlets never reach equilibrium, and their coherent production, propagation, and annihilation generates a baryon asymmetry. We find that that the out-of-equilibrium condition and the dark matter density constraint typically require the lightest scalar to be long-lived, giving good prospects for detection or exclusion in current and upcoming colliders. In generalizing the leptogenesis mechanism of Akhmedov, Rubakov and Smirnov, our model expands the phenomenological possibilities for low-scale baryogenesis.
