论文标题
双感染
Twin Cogenesis
论文作者
论文摘要
我们研究了双Higgs设置中的一种结构化机制，该机制自然可以解释暗物质的本质，宇宙的巧合拼图，少量分层问题，瘦素生成和微小的中微子质量。将三个重的主要中微子引入了标准模型部门和双胞胎扇区，这解释了微小的中微子肿块，并同时产生了Lepton的不对称性和Twin Lepton不对称性。双感染机制适用于没有明确的$ \ mathbb {z} _2 $破裂的任何可行的双Higgs模型，并逃避了$δn_ {\ rm eff} $约束。我们使用中微子 - 酚类双胞胎两次Higgs Doublet模型说明了双感染机制，这是一种新提出的模型，以自发$ \ mathbb {z} _2 _2 $破裂来提升双中微子质量。带有Stueckelberg质量$ \ MATHCAL {O}（10）$ MEV的深色光子可确保双扇形的能量以及双扇形颗粒的对称成分。最轻的双胞胎重子是大约5.5 GEV的暗物质候选者，它们自然地解释了宇宙中的暗物质和可见物质的数量。我们还演示了兄弟双胞胎希格斯设置中的双重性，其中暗物质候选者是双底界$ω^\ prime_ {b^\ prime b^\ prime b^\ prime} $。
We investigate a cogenesis mechanism within the twin Higgs setup which can naturally explain the nature of dark matter, the cosmic coincidence puzzle, little hierarchy problem, leptogenesis and the tiny neutrino masses. Three heavy Majorana neutrinos are introduced to the standard model sector and the twin sector respectively, which explain the tiny neutrino masses and generate the lepton asymmetry and the twin lepton asymmetry at the same time. The twin cogenesis mechanism applies to any viable twin Higgs model without an explicit $\mathbb{Z}_2$ breaking in the leptonic sector and evading the $ΔN_{\rm eff}$ constraint. We illustrate the twin cogenesis mechanism using the neutrino-philic twin two Higgs doublet model, a newly proposed model to lift the twin neutrino masses with spontaneous $\mathbb{Z}_2$ breaking. The dark photon with a Stueckelberg mass $\mathcal{O}(10)$ MeV ensures the energy in the twin sector as well as the symmetric component of twin sector particles can be depleted. The lightest twin baryons are the dark matter candidates with masses approximately 5.5 GeV, which explain naturally the amount of dark matter and visible matter in the Universe are of the same order. We also demonstrate twin cogenesis in the fraternal twin Higgs setup, in which the dark matter candidate is the twin bottom bound state $Ω^\prime_{b^\prime b^\prime b^\prime}$.
