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arXiv 0810.1892hep-phastro-ph
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暗物质湮灭和大爆炸核合成的正电子/ Gamma-Ray特征

Positron/Gamma-Ray Signatures of Dark Matter Annihilation and Big-Bang Nucleosynthesis

Junji Hisano, Masahiro Kawasaki, Kazunori Kohri, Kazunori Nakayama

摘要:

PAMELA实验观测到的正电子过剩可能来自于暗物质湮灭,如果湮灭截面足够大的话。我们表明,暗物质湮灭方案来解释正电子过剩也可能是兼容的宇宙锂丰度之间的理论和观测的差异。超对称标准模型中的类维诺中性伴子就是一个很好的例子,费米卫星实验也证实了这一点。

英文摘要:

The positron excess observed by the PAMELA experiment may come from dark matter annihilation, if the annihilation cross section is large enough. We show that the dark matter annihilation scenarios to explain the positron excess may also be compatible with the discrepancy of the cosmic lithium abundances between theory and observations. The wino-like neutralino in the supersymmetric standard model is a good example for it. This scenario may be confirmed by Fermi satellite experiment.

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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