发表机构
Indian Institute of Technology Guwahati（印度理工学院古瓦哈提分校）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文提出带电标量门户扩展方案，复兴希格斯门户暗物质空白质量区，驱动超荷非恢复，并通过强一级相变支持轻子生成，参数空间可由LISA等引力波探测器检验。
AI 中文摘要
我们探讨了通过引入一个带电单态标量来复兴标量单态暗物质（DM）的可能性，该带电标量还导致早期宇宙中的超荷非恢复。通过希格斯门户湮灭的最小标量单态暗物质受到直接探测实验的严格约束，仅在希格斯共振附近和约1 TeV的两个窄质量区域之间留下一个空白区域。带电标量门户的加入复兴了这一空白区域，同时使单圈直接探测率保持在当前和未来实验可及的范围内。高温下带电标量的非零真空期望值也可以驱动早期宇宙中$U(1)_Y$超荷对称性的非恢复。在参数空间的一个子集中，电荷破缺最小值通过强一级相变恢复到标准希格斯最小值，使其成为通过轻子生成机制产生宇宙重子不对称性的可行方案。与暗物质遗迹、直接探测、对称性非恢复及其他实验约束相容的很大一部分参数空间，可以在即将到来的引力波探测器如LISA、BBO和DECIGO上得到探测。
英文摘要
We explore the possibility of reviving scalar singlet dark matter (DM) with a minimal extension by a charged singlet scalar which also leads to hypercharge non-restoration in the early Universe. The minimal scalar singlet DM annihilating via the Higgs portal is tightly constrained by direct-detection experiments, leaving a desert between two narrow regions of the DM mass near the Higgs resonance and around a TeV. The addition of a charged scalar portal revives this desert region while keeping the one-loop direct-detection rate within reach of current and future experiments. A non-zero vacuum expectation value of the charged scalar at high temperature can also drive $U(1)_Y$ hypercharge symmetry non-restoration in the early Universe. In a subset of the parameter space, the charge-breaking minimum gets restored to the standard Higgs minimum via a strong first-order phase transition, making it a viable scenario for the generation of baryon asymmetry of the Universe via leptogenesis. A large part of the parameter space consistent with DM relic, direct-detection, symmetry non-restoration and other experimental bounds can be probed at upcoming GW detectors such as LISA, BBO and DECIGO.
Comments14 pages, 9 caption figures, 1 table
