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arXiv 0810.5167hep-phastro-ph
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PAMELA和ATIC中的轻微非极小暗物质

Slightly Non-Minimal Dark Matter in PAMELA and ATIC

Ann E. Nelson, Christopher Spitzer

摘要:

我们提出了一个简单的模型,其中暗物质耦合到标准模型通过光标量中介,本身是不稳定的。我们发现这个模型有几个显着的特点,并允许一个自然的解释过剩的正电子,但没有过剩的反质子,已建议从PAMELA和ATIC的早期数据。此外,该模型产生非常小的核子耦合,远低于直接检测限。在本文中,我们探讨了这个模型在早期宇宙和星系中的效果。

英文摘要:

We present a simple model in which dark matter couples to the standard model through a light scalar intermediary that is itself unstable. We find this model has several notable features, and allows a natural explanation for a surplus of positrons, but no surplus of anti-protons, as has been suggested by early data from PAMELA and ATIC. Moreover, this model yields a very small nucleon coupling, well below the direct detection limits. In this paper we explore the effect of this model in both the early universe and in the galaxy.

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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