论文标题
通过定向检测器发现超新星生产的暗物质
Discovering supernova-produced dark matter with directional detectors
论文作者
论文摘要
超新星可以产生巨大的新颗粒，其质量在MEV量表上，这是对轻型暗物质模型的质量尺度。当这些新颗粒被弥散地捕获在超新星内时，逃逸的通量将出现半流行性，并在速度中订购一个散布。结果，银河系超新星的重叠排放将产生地球这些颗粒的总体通量，该颗粒的时间大约是恒定的。但是，这种通量是高度各向异性的，并且陡峭地达到了银河系中心。这与像WIMP一样的暗物质的宇宙学丰度相反，由于银河系的旋转似乎来自Cygnus星座的方向。在本文中，我们证明了定向检测器有效地从寒冷的宇宙学丰度中有效区分信号的GEV尺寸wimps和来自Supernova生产的Hot Supernova生产的MEV尺度暗物质的信号。
Supernovae can produce vast fluxes of new particles with masses on the MeV scale, a mass scale of interest for models of light dark matter. When these new particles become diffusively trapped within the supernova, the escaping flux will emerge semirelativistic with an order-one spread in velocities. As a result, overlapping emissions from Galactic supernovae will produce an overall flux of these particles at Earth that is approximately constant in time. However, this flux is highly anisotropic and is steeply peaked towards the Galactic center. This is in contrast with the cosmological abundance of a WIMP-like dark matter which, due to the rotation of the Galaxy, appears to come from the direction of the Cygnus constellation. In this paper, we demonstrate the need for a directional detector to efficiently discriminate between a signal from a cold cosmological abundance of GeV-scale WIMPs and a signal from a hot population of supernova-produced MeV-scale dark matter.
