论文标题
来自暗物质的无菌中微子：$ν$噩梦？
Sterile Neutrinos from Dark Matter: A $ν$ Nightmare?
论文作者
论文摘要
我们提供了一项全面研究，从暗物质成对灭气或衰减到无菌（右手）中微子中的可观察到的光谱。例如，在中微子门户的暗物质模型中发生这种情况，无菌中微子充当暗物质和标准模型部门之间的门户。随后的右手中微子的衰减产生可检测到的标准模型颗粒，尤其是光子，正面和中微子。我们研究模型的现象学，其中右撇子中微子质量低于GEV量表，以及它们所处的位置或比TEV量表更重的模型。在这两种情况下，出于不同的原因，包括蒙特卡洛模拟在内的标准工具都不足和不准确。我们提出了一个完整的框架，以计算右手中微子衰变的相关分支比，以及用于广泛的暗物质和右手中微子质量的次级光子，原位和中微子的光谱。我们讨论了此类信号的一般特征，并将光谱与来自暗物质歼灭/衰减到底部夸克的标准信号进行比较。此外，我们提供可以用于计算此类光谱的开源代码1。该代码可从https://github.com/loganamorrison/blackthorn获得。
We provide a comprehensive study of observable spectra from dark matter pair-annihilation or decay into sterile (right-handed) neutrinos. This occurs, for instance, in neutrino portal dark matter models, where a sterile neutrino acts as the portal between dark matter and the Standard Model sector. The subsequent decays of right-handed neutrinos produce detectable Standard Model particles, notably photons, positrons, and neutrinos. We study the phenomenology of models where the right-handed neutrino masses are below the GeV scale, as well as models where they are at, or significantly heavier than, the TeV scale. In both instances, and for different reasons, the standard tools, including Monte Carlo simulations, are both inadequate and inaccurate. We present the complete framework to compute the relevant branching ratios for right-handed neutrino decays and the spectra of secondary photons, positrons, and neutrinos for a broad range of dark matter and right-handed neutrino masses. We discuss the general features of such signals, and compare the spectra to standard signals from dark matter annihilation/decay into bottom quarks. Additionally, we provide open source code1 that can be used to compute such spectra. The code is available at https://github.com/LoganAMorrison/blackthorn.
