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arXiv 1003.4505hep-ph
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不对称暗物质与太阳

Asymmetric dark matter and the Sun

Mads T. Frandsen, Subir Sarkar

摘要:

具有物质-反物质不对称性的冷暗物质粒子在被太阳引力捕获后不会湮灭,并且会影响其内部结构。当这些粒子具有正确顺序的自相互作用来解释星系尺度上的结构形成时,捕获率呈指数级增强。一个质量为5 GeV的“暗重子”是一个自然的候选者,如果它的不对称性与普通重子相似,它就具有所需的遗迹丰度。我们表明,这样的粒子可以解决“太阳组成问题”。预测的低能中微子通量的小幅下降可以通过Borexino和SNO+实验来测量。

英文摘要:

Cold dark matter particles with an intrinsic matter-antimatter asymmetry do not annihilate after gravitational capture by the Sun and can affect its interior structure. The rate of capture is exponentially enhanced when such particles have self-interactions of the right order to explain structure formation on galactic scales. A `dark baryon' of mass 5 GeV is a natural candidate and has the required relic abundance if its asymmetry is similar to that of ordinary baryons. We show that such particles can solve the `solar composition problem'. The predicted small decrease in the low energy neutrino fluxes may be measurable by the Borexino and SNO+ experiments.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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