论文标题
带有扩展的Seesaw机制
A two-component vector WIMP -- fermion FIMP dark matter model with an extended seesaw mechanism
论文作者
论文摘要
我们考虑了标准模型的扩展，该模型解释了中微子质量并具有丰富的暗物质现象学。该模型有两个候选暗物质，一个矢量w和一个fermion fibd，其遗物密度的总和与总的暗物质丰度相匹配。我们广泛研究了暗物质生产机制及其与中微子部门的联系，以及当前和将来的实验的各种界限。模型中的额外标量场可能会引起早期宇宙中的一阶相变。我们研究与一阶相变相关的随机重力波的产生。我们表明，相跃迁可能很强，因此该模型可能满足成功的电eakeak baryogenogeny的必要条件之一。还讨论了相关引力波的可检测性。
We consider an extension of the Standard Model that explains the neutrino masses and has a rich dark matter phenomenology. The model has two dark matter candidates, a vector WIMP and a fermion FIMP, and the sum of their relic densities matches the total dark matter abundance. We extensively study the dark matter production mechanisms and its connection with the neutrino sector, together with various bounds from present and future experiments. The extra scalar field in the model may induce a first-order phase transition in the early Universe. We study the production of stochastic gravitational waves associated with the first-order phase transition. We show that the phase transition can be strong, and thus the model may satisfy one of the necessary conditions for a successful electroweak baryogenesis. Detectability of the phase transition-associated gravitational waves is also discussed.
