论文标题
511 KEV银河系线的暗物质模型预测地球上的KeV电子后坐力
Dark matter models for the 511 keV galactic line predict keV electron recoils on Earth
论文作者
论文摘要
我们提出了深色物质模型，该模型是从银河中心兼容的511 keV光子发射，与实验性约束和理论一致性兼容，以及通过P波的nih灭或在非弹性模型中实现遗物丰度，通过共同批准。由于太阳不可避免地会使这些模型在地球探测器处预测keV电子后坐力，因此可以自然解释Xenon1t协作最近报道的过量。少量的自由参数使诸如Xenonnt和Panda-X等检测器，Na64和LDMX等探测器以及诸如Simons天文台和CMB-S4之类的宇宙学调查都可以测试这些想法。作为我们研究的副产品，我们将Na64限制在不可见的深色光子到其他颗粒上的限制。
We propose models of Dark Matter that account for the 511 keV photon emission from the Galactic Centre, compatibly with experimental constraints and theoretical consistency, and where the relic abundance is achieved via p-wave annihilations or, in inelastic models, via co-annihilations. Due to the Dark Matter component that is inevitably upscattered by the Sun, these models generically predict keV electron recoils at detectors on Earth, and could naturally explain the excess recently reported by the XENON1T collaboration. The very small number of free parameters make these ideas testable by detectors like XENONnT and Panda-X, by accelerators like NA64 and LDMX, and by cosmological surveys like the Simons observatory and CMB-S4. As a byproduct of our study, we recast NA64 limits on invisibly decaying dark photons to other particles.
