论文标题
中微子质量，暗物质，瘦肉生成和通胀的起源
Origin of neutrino masses, dark matter, leptogenesis, and inflation in a seesaw model with triplets
论文作者
论文摘要
我们考虑了一种新的物理模型，其中标准模型（SM）由无charge $ y = 0 $ y = 0 $ triplet fermions和Higgs Triplet扩展，并具有Hypercharge $ y = 2 $。前两代费米昂三重态甚至在$ z_2 $变换下。相比之下，在相同的$ z_2 $变换下，第三fermion三胞胎和标量三重态很奇怪。这是一个同时解释中微子质量和混合，暗物质，产生，通货膨胀和再加热温度的统一框架。两个$ z_2 $甚至中性的费米斯解释了中微子低能变量，而第三个可以用作可行的暗物质候选者，从而解释了确切的遗物密度。标量三重态非小限时地耦合到重力并形成充气。我们计算通货膨胀参数，发现它们与新的Planck-2018约束一致。我们还对相对论SM颗粒的加速器衰变/an灭进行了加热分析。与$ z_2 $相关的三胞胎费米斯甚至扇区都可以在TEV量表上提供观察到的宇宙的重子不对称。
We consider a new physics model, where the Standard Model (SM) is extended by hyperchargeless $Y=0$ triplet fermions and Higgs triplet with hypercharge $Y=2$. The first two generation fermion triplets are even under the $Z_2$ transformation. In contrast, the third fermion triplet and scalar triplet are odd under the same $Z_2$ transformation. It is a unifying framework for the simultaneous explanation of neutrino mass and mixing, dark matter, baryogenesis, inflation, and reheating temperature of the Universe. The two $Z_2$ even neutral fermions explain the neutrino low energy variables, whereas the third one can serve as a viable dark matter candidate, explaining the exact relic density. The scalar triplet is coupled nonminimally to gravity and forms the inflaton. We calculate the inflationary parameters and find them consistent with the new Planck-2018 constraints. We also do the reheating analysis for the inflaton decays/annihilations to relativistic SM particles. The triplet fermions associated with $Z_2$ even sector can provide the observed baryon asymmetry of the Universe at the TeV scale.
