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arXiv 1005.3116hep-phastro-ph.COhep-ex
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增强暗物质湮灭为中微子

Enhancing Dark Matter Annihilation into Neutrinos

Manfred Lindner, Alexander Merle, Viviana Niro

摘要:

我们对暗物质直接湮灭为中微子进行了详细的准模型独立分析。考虑到标量和费米暗物质的不同情况下,我们确定了几个设置中,这种湮灭是增强的,在文献中的一些陈述相反。他们的关键点是,几个限制,例如,超对称框架一般不成立。中微子的质量产生机制也起着重要作用。我们说明了我们的考虑两个例子,不(通常)抑制的中微子质量的小,我们也提出了一个数值分析。我们的研究结果可以很容易地作为指导模型的建立。

英文摘要:

We perform a detailed and quasi model-independent analysis of direct annihilation of Dark Matter into neutrinos. Considering different cases for scalar and fermionic Dark Matter, we identify several settings in which this annihilation is enhanced, contrary to some statements in the literature. They key point is that several restrictions of, e.g., a supersymmetric framework do not hold in general. The mass generation mechanism of the neutrinos plays an important role, too. We illustrate our considerations by two examples that are not (as usually) suppressed by the smallness of the neutrino mass, for which we also present a numerical analysis. Our results can be easily used as guidelines for model building.

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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