arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2007.09105hep-phastro-ph.GAhep-ex
收藏

511 keV银河系线的暗物质模型预测地球上的keV电子反冲

Dark matter models for the 511 keV galactic line predict keV electron recoils on Earth

Yohei Ema, Filippo Sala, Ryosuke Sato

摘要:

我们提出的模型的暗物质,占511千电子伏的光子发射从银河系中心,兼容的实验约束和理论的一致性,并通过p波湮灭或,在非弹性模型中,通过共同湮灭的遗迹丰度。由于暗物质不可避免地被太阳向上散射,这些模型通常预测地球上探测器上的keV电子反冲,并且可以自然地解释最近由XENON 1 T合作报告的过量。自由参数的数量非常少,使得这些想法可以通过XENONNT和Panda-X等探测器,NA 64和LDMX等加速器,以及西蒙斯天文台和CMB-S4等宇宙学调查来验证。作为我们研究的一个副产品,我们重新定义了NA 64对其他粒子的不可见衰减暗光子的限制。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑