Supernova signals of light dark matter
Supernova signals of light dark matter
复制标题
光暗物质的超新星信号
DOI:
10.1103/physrevd.100.075018
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发表时间:
2019
影响因子:
5
通讯作者:
Rajendran, Surjeet
中科院分区:
文献类型:
--
作者:
DeRocco, William;Graham, Peter W.;Kasen, Daniel;Marques-Tavares, Gustavo;Rajendran, Surjeet
Dark matter direct detection experiments have poor sensitivity to a galactic population of dark matter with mass below the GeV scale. However, such dark matter can be produced copiously in supernovae. Since this thermally produced population is much hotter than the galactic dark matter, it can be observed with direct detection experiments. In this paper, we focus on a dark sector with fermion dark matter and a heavy dark photon as a specific example. We first extend existing supernova cooling constraints on this model to the regime of strong coupling where the dark matter becomes diffusively trapped in the supernova. Then, using the fact that even outside these cooling constraints the diffuse galactic flux of these dark sector particles can still be large, we show that this flux is detectable in direct detection experiments such as current and next-generation liquid xenon detectors. As a result, due to supernova production, light dark matter has the potential to be discovered over many orders of magnitude of mass and coupling.
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