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arXiv 0905.0388hep-phastro-ph.HE
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PAMELA/Fermi实验中Wino暗物质的R-破坏衰变和电子/正电子过剩

R-violating Decay of Wino Dark Matter and electron/positron Excesses in the PAMELA/Fermi Experiments

Satoshi Shirai, Fuminobu Takahashi, T. T. Yanagida

摘要:

我们表明,R-宇称违反衰变的质量\sim 3 TeV的维诺暗物质可以自然地解释的流量和光谱形状的宇宙射线电子和正电子观测的PAMELA和费米卫星。为了给这种情况提供理论基础,我们还提出了一个模型,三线性R宇称破缺出现的系数被引力子质量的幂所抑制,这自然导致Wino寿命为O(10^26)sec。

英文摘要:

We show that R-parity violating decay of Wino dark matter of mass \sim 3 TeV can naturally account for the flux and spectral shape of the cosmic-ray electrons and positrons observed by the PAMELA and Fermi satellites. To provide a theoretical basis for the scenario, we also present a model that trilinear R-parity breaking appears with a coefficient suppressed by powers of the gravitino mass, which naturally leads to the Wino lifetime of O(10^26) sec.

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