论文标题
从星系中的原子重排检测深色光子
Detecting Dark Photons from Atomic Rearrangement in the Galaxy
论文作者
论文摘要
我们研究了一个新的黑暗区域签名，以在银河系中进行“重排”的原子过程。在此过程中，类似氢的原子暗物质及其抗颗粒可以重新排列以形成高度激发的结合状态。然后，这种结合的状态将脱落到基态中，发出大量的深色光子，这些光子可以通过与光子的动力学混合在地球上的实验中测量。我们发现，对于GEV范围内的DM质量，深色光子具有足够的能量，可以通过中微子观测站的阈值，例如Borexino和Super-Kamiokande，即使我们的原子状态构成了总DM丰度的一小部分，也可以探测我们的情况。我们从当前数据以及未来检测器的前景中研究了模型参数的相应界限。
We study a new dark sector signature for an atomic process of "rearrangement" in the galaxy. In this process, a hydrogen-like atomic dark matter state together with its anti-particle can rearrange to form a highly-excited bound state. This bound state will then de-excite into the ground state emitting a large number of dark photons that can be measured in experiments on Earth through their kinetic mixing with the photon. We find that for DM masses in the GeV range, the dark photons have enough energy to pass the thresholds of neutrino observatories such as Borexino and Super-Kamiokande that can probe for our scenario even when our atomic states constitute a small fraction of the total DM abundance. We study the corresponding bounds on the parameters of our model from current data as well as the prospects for future detectors.
