论文标题
通过光介体从暗物质an灭的宇宙射线抗较高的产生增强
Enhanced cosmic-ray antihelium production from dark matter annihilation through light mediators
论文作者
论文摘要
宇宙射线（CR）抗较高是在银河系中间接搜索暗物质（DM）的重要探针。但是，由于CR抗抗蛋白子和$γ$ rays的测量得出的严格约束，因此，从常规DM直接歼灭到标准模型最终状态的CR抗较高的通量预计将远低于当前实验的灵敏度。我们表明，如果DM颗粒通过质量$ M_DS \ 8 $ GEV接近抗细胞生产阈值的轻介质颗粒歼灭，抗细胞的产生可以显着增强。考虑到来自AMS-02抗蛋白数据数据的约束以及Fermi-LAT $γ$ -RARE-RAY数据的球体矮星系数据，我们发现，在这种情况下，CR抗抗高速素可以通过三个数量级来增强，这使得它在进行的AMSS-02实验的敏感性中。
Cosmic-ray (CR) antihelium is an important probe for the indirect search of dark matter (DM) annihilation in the Galaxy. However, due to stringent constraints from the measurements of CR antiprotons and $γ$-rays, the flux of CR antihelium from the conventional DM direct annihilation into Standard Model final states is expected to be far below the sensitivity of the current experiments. We show that the production of antihelium can be significantly enhanced if the DM particles annihilate through light mediator particles with a mass $m_ϕ\approx 8$ GeV close to the antihelium production threshold. After taking into account the constraints from the AMS-02 antiproton data and the Fermi-LAT $γ$-ray data on the spheroidal dwarf galaxies, we find that in this scenario the CR antihelium flux can be enhanced by three orders of magnitude, which makes it within the sensitivity of the ongoing AMS-02 experiment.
