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arXiv 1504.05937hep-phastro-ph.CO
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来自湮灭或衰变暗物质的AMS-02反质子

AMS-02 Antiprotons from Annihilating or Decaying Dark Matter

Koichi Hamaguchi, Takeo Moroi, Kazunori Nakayama

摘要:

最近,AMS-02实验报告了宇宙射线反质子超过预期的天体物理背景。我们解释过剩的信号从湮灭或衰变的暗物质,并发现所观察到的光谱很好地拟合添加贡献的质量为O(TeV)或更大的暗物质的湮灭或衰变。有趣的是,质量约为3 TeV的Wino暗物质,其热遗迹丰度与目前的暗物质丰度一致,可以解释反质子过剩。我们还讨论了衰变引力子暗物质与R-宇称破坏的影响。

英文摘要:

Recently the AMS-02 experiment reported an excess of cosmic ray antiprotons over the expected astrophysical background. We interpret the excess as a signal from annihilating or decaying dark matter and find that the observed spectrum is well fitted by adding contributions from the annihilation or decay of dark matter with mass of O(TeV) or larger. Interestingly, Wino dark matter with mass of around 3 TeV, whose thermal relic abundance is consistent with present dark matter abundance, can explain the antiproton excess. We also discuss the implications for the decaying gravitino dark matter with R-parity violation.

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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