论文标题
类似Portalino的模型中的暗物质和中微子质量
Dark Matter and Neutrino Masses in a Portalino-like Model
论文作者
论文摘要
我们探索了一种类似于Portalino的暗物质和中微子质量的模型，其中右手中微子领域连接了标准模型和隐藏扇区的量规中性运算符。中微子肿块是通过seesaw样机制产生的，可以解释光活性中微子质量。该模型包括一个``portalino''状态，该状态通过中微子门户连接两个扇区。该模型中的暗物质由一个隐藏的部门dirac fermion组成，该部门通过谐振灭绝的灭绝将其主要冻结到其他隐藏的扇区状态，最终导致了Portalinos人群。由于扩展中微子区域中的小混合，这些门户网站往往是宇宙学上长期寿命的，从大爆炸核合成和宇宙微波背景辐射的测量中腐烂到标准模型颗粒。将这些限制与对Portalino-Neutrino混合大小的直接限制结合在一起，以及模型的假设，发现Portalino状态的可行质量范围为0.02 ev $ \ simsim m_n \ Lessim m_n \ Lessim $ 6.4 ev或489 mev $ \ limessim m_n \ simeSim m_n \ simsim m_n \ simsim simsim $ $ $ $ $。在暗物质歼灭中产生的高度增强，单能门户的形式的间接暗物质信号为中微子望远镜提供了目标。
We explore a Portalino-like model of dark matter and neutrino masses in which right-handed neutrino fields connect gauge neutral operators from the Standard Model and Hidden Sector. Neutrino masses are generated via a seesaw-like mechanism that can explain the light active neutrino masses. The model includes a ``Portalino'' state that connects the two sectors via the neutrino portal. Dark Matter in this model consists of a hidden sector Dirac fermion that dominantly freezes-out via resonant annihilations into other hidden sector states, which ultimately results in a population of Portalinos. Due to small mixing in the extended neutrino sector these Portalinos tend to be cosmologically long lived, decaying into Standard Model particles leading to constraints on the model from Big Bang Nucleosynthesis and measurements of the Cosmic Microwave Background radiation. Combining these limits with direct constraints on the size of the Portalino-neutrino mixing and the assumptions of the model the viable mass ranges for the Portalino states are found to be 0.02 eV $\lesssim m_n \lesssim$ 6.4 eV or 489 MeV $\lesssim m_n \lesssim$ TeV. Indirect dark matter signals in the form of highly boosted, mono-energetic Portalinos produced in Dark Matter annihilations provide a target for neutrino telescopes.
