论文标题
探测托勒密的sub-ev暗物质腐烂
Probing sub-eV Dark Matter decays with PTOLEMY
论文作者
论文摘要
当暗物质质量低于EV量表时，其宇宙学的数量超过了来自宇宙微波背景和遗物中微子的光子的数量。如果这种暗物质腐烂到成对的中微子，则意味着寻求检测宇宙中微子背景的实验可能对这种附加形式的“深色辐射”也很敏感。在这里，我们研究了检测的前景，考虑了未来托勒密实验的预测性能的各种选择。从详细的概况可能的可能性分析中，我们发现，可以发现今天的暗物质寿命为$ 10^4 $ gyr或今天的暗物质分数衰减。前景是通过银河系和宇宙中微子暗辐射通量引入的独特光谱事件形状来促进的。在此过程中，我们还阐明了在暗物质腐烂中覆盖的重要性。这项工作中介绍的方案可以被视为对这些工具开发的早期物理目标，这些仪器对性能和能量解决方案的需求放松。
When the Dark Matter mass is below the eV-scale, its cosmological occupation number exceeds the ones of photons from the cosmic microwave background as well as of relic neutrinos. If such Dark Matter decays to pairs of neutrinos, it implies that experiments that seek the detection of the cosmic neutrino background may as well be sensitive to this additional form of "dark radiation". Here we study the prospects for detection taking into account various options for the forecasted performance of the future PTOLEMY experiment. From a detailed profile likelihood analysis we find that Dark Matter decays with lifetime as large as $10^4$ Gyr or a sub-% Dark Matter fraction decaying today can be discovered. The prospects are facilitated by the distinct spectral event shape that is introduced from galactic and cosmological neutrino dark radiation fluxes. In the process we also clarify the importance of Pauli-blocking in the Dark Matter decay. The scenarios presented in this work can be considered early physics targets in the development of these instruments with relaxed demands on performance and energy resolution.
