论文标题
亚稳态EEV暗物质的模型
A Model of Metastable EeV Dark Matter
论文作者
论文摘要
我们提出了一个模型，尽管有足够的丰度可以生产长寿命的伪级EEV粒子，以便考虑到冷的暗物质密度，尽管planck质量抑制了与热浴的耦合。通过较高维操作员引起的衍生耦合将该状态连接到隐藏的无菌中微子部门，使人们可以考虑光中微子的质量，同时拥有比宇宙年龄大得多的寿命。此外，在重新加热的第一瞬间，同一衍生耦合解释了暗物质的产生。鉴于ICECUBE和ANITA协作的敏感性，我们以中微子部门的超高能量宇宙射线的形式研究了这种模型的可能签名，并表明可以在不久的将来检测到此类信号。
We propose a model where a long-lived pseudoscalar EeV particle can be produced with sufficient abundance so as to account for the cold dark matter density, despite having a Planck mass suppressed coupling to the thermal bath. Connecting this state to a hidden sterile neutrino sector through derivative couplings, induced by higher dimensional operators, allows one to account for light neutrino masses while having a lifetime that can be much larger than the age of the Universe. Moreover, the same derivative coupling accounts for the production of dark matter in the very first instant of the reheating. Given the sensitivity of the IceCube and ANITA collaborations, we study the possible signatures of such a model in the form of Ultra-High-Energy Cosmic Rays in the neutrino sector, and show that such signals could be detected in the near future.
