arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1502.01755hep-phastro-ph.HE
收藏

晕中暗原子形成的信号

Signals from dark atom formation in halos

Lauren Pearce, Kalliopi Petraki, Alexander Kusenko

摘要:

我们考虑间接探测信号的原子暗物质,与一个巨大的暗光子,动力学混合与超荷。在参数空间的重要区域,暗物质至少部分地保持电离,并且暗原子的形成可以有效地发生在致密区域,例如星系晕的中心。暗原子的形成伴随着暗光子的发射,暗光子随后可以衰变成标准模型粒子。我们讨论了预期的信号强度,并将其与湮灭暗物质的信号强度进行了比较。作为一个案例研究,我们探讨的可能性,暗原子的形成可以解释所观察到的511 keV线,并概述了相关的参数空间。

英文摘要:

We consider indirect detection signals of atomic dark matter, with a massive dark photon which mixes kinetically with hypercharge. In significant regions of parameter space, dark matter remains at least partially ionized today, and dark atom formation can occur efficiently in dense regions, such as the centers of galactic halos. The formation of dark atoms is accompanied by emission of a dark photon, which can subsequently decay into Standard Model particles. We discuss the expected signal strength and compare it to that of annihilating dark matter. As a case study, we explore the possibility that dark atom formation can account for the observed 511 keV line and outline the relevant parameter space.

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。

↑