论文标题
木星任务作为暗物质的探针
Jupiter missions as probes of dark matter
论文作者
论文摘要
木星是太阳系中最引人入胜的行星，已有9个航天器访问了，该航天器已收集了有关Jovian特性的大量数据。在本文中，我们表明，相对论电子通量上的一种原位测量值可用于探测暗扇区和我们可见世界之间的暗物质（DM）和深色中介。木星具有巨大的重量和凉爽的核心，可能是DM的理想捕获者，围绕GEV量表。被捕获的DM颗粒可以将其歼灭成长寿命的深色介体，例如深色光子，后来腐烂成木星外的电子和正上音。被Jovian磁场困住的带电颗粒已在木星任务中测量，例如伽利略探针和朱诺轨道器。我们使用可用的数据将上限设置在DM散射核子的横截面上，$σ_{χn} $，用于具有寿命$ {\ cal o}（0.1-1）$ s的深色介体。结果表明，来自木星任务的数据已经在参数空间中的探测区域已经探测到未经现有的DM搜索，例如约束$（10^{ - 40} -10^{ - 40} -10^{ - 10^{ - 38}）的$σ_{χn} $，用于1 gev dm oppriate $ e^$ e^ - $ e^ - 这项研究是探索木星任务中大行星数据集的全部物理潜力的一个例子和第一步。我们还概述了与电子，正电子信号和太阳轴的二级产品有关的其他几个潜在方向。
Jupiter, the fascinating largest planet in the solar system, has been visited by nine spacecraft, which have collected a significant amount of data about Jovian properties. In this paper, we show that one type of the in situ measurements on the relativistic electron fluxes could be used to probe dark matter (DM) and dark mediator between the dark sector and our visible world. Jupiter, with its immense weight and cool core, could be an ideal capturer for DM with masses around the GeV scale. The captured DM particles could annihilate into long-lived dark mediators such as dark photons, which subsequently decay into electrons and positrons outside Jupiter. The charged particles, trapped by the Jovian magnetic field, have been measured in Jupiter missions such as the Galileo probe and the Juno orbiter. We use the data available to set upper bounds on the cross section of DM scattering off nucleons, $σ_{χn}$, for dark mediators with lifetime of order ${\cal O}(0.1-1)$s. The results show that data from Jupiter missions already probe regions in the parameter space un- or under-explored by existing DM searches, e.g., constrain $σ_{χn}$ of order $(10^{-40} - 10^{-38})$ cm$^2$ for 1 GeV DM dominantly annihilating into $e^+e^-$ through dark mediators. This study serves as an example and an initial step to explore the full physics potential of the large planetary datasets from Jupiter missions. We also outline several other potential directions related to secondary products of electrons, positron signals and solar axions.
