论文标题
用惰性双重鞋面的electroweak相过渡的暗物质和性质
Dark Matter and Nature of Electroweak Phase Transition with an Inert Doublet
论文作者
论文摘要
我们对惰性双重模型中实现暗物质（DM）的前景进行了全面，最新的分析，同时增强了电动eakeak相变（EWPHT），例如允许进行电动eakeak baryogenogeny。我们没有专注于某些方面或质量层次结构，而是执行广泛但细粒度的参数空间扫描，在那里我们分析了在光和重型DM区域中EWPHT的性质，并与可能居住在最轻的惰性双圈状态下的DM的数量对其进行。因此，我们指出了一个可行的区域，在该区域中可以出现非平凡的两步EWPHT，而不会与直接检测范围冲突，这可能会在引力波签名中留下有趣的烙印。我们提出了具有此功能的新基准测试，并根据新的Xenon1t限制更新具有强大一阶过渡的基准测试标准。此外，考虑到这些最新范围以及相关的撞机约束，我们设想了一个新的区域，用于少量质量分裂的新区域，取消通常对新的非DM标量量表的确切退化的假设，例如避免对碰撞器的界限，同时在相当大的DM质量范围内提供公平的DM丰富性。这是从详细的调查中详细调查了共同宣布对丰度的影响，剖析了各种渠道。
We provide a comprehensive and up-to-date analysis of the prospects to realize Dark Matter (DM) in the Inert Doublet Model, while simultaneously enhancing the Electroweak Phase Transition (EWPhT) such as to allow for electroweak baryogenesis. Instead of focusing on certain aspects or mass hierarchies, we perform extensive, yet fine-grained, parameter space scans, where we analyze the nature of the EWPhT in both the light and the heavy DM regions, confronting it with the amount of DM potentially residing in the lightest inert-doublet state. Thereby, we point out a viable region where a non-trivial two-step EWPhT can appear, without being in conflict with direct-detection bounds, which could leave interesting imprints in gravitational wave signatures. We propose new benchmarks with this feature as well as update benchmarks with a strong first-order transition in the light of new XENON1T limits. Moreover, taking into account these latest bounds as well as relevant collider constraints, we envisage a new region for light DM with a small mass splitting, lifting the usual assumption of exact degeneracy of the new non-DM scalars, such as to avoid collider bounds while providing a fair DM abundance over a rather large DM mass range. This follows from a detailed survey of the impact of co-annihilations on the abundance, dissecting the various channels.
