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arXiv 0908.4317hep-ph
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费米之后的卡鲁扎-克莱因暗物质

Kaluza-Klein Dark Matter After Fermi

Chuan-Ren Chen, Mihoko M. Nojiri, Seong Chan Park, Jing Shu

摘要:

宇宙额外维模型中的Kaluza-Klein光子是最有吸引力的暗物质候选者之一。900 GeV质量的Kaluza-Klein光子的残余密度与我们观测到的宇宙中暗物质的数量符合得很好,具有分裂宇宙额外维的特征分裂谱。有趣的是,在相同质量范围内的卡鲁扎-克莱因光子也为最近观察到的宇宙电子和正电子通量的过度提供了极好的拟合。伽马射线的贡献量,主要来自τ衰变,可以在300 GeV左右显着,因此可以通过即将到来的费米-LAT扩散伽马射线数据观察或限制。

英文摘要:

Kaluza-Klein photon in universal extra dimension models is one of the most attractive dark matter candidates as a weakly interacting massive particle. Having a characteristic split spectrum in split universal extra dimension the relic density of Kaluza-Klein photon with 900 GeV mass is in good agreement with the observed dark matter amount in our Universe. Interestingly Kaluza-Klein photon in the same mass range also provides excellent fits to the recently observed excesses in cosmic electron and positron fluxes. The amount of gamma-ray contributions, mostly from tau decays, can be significant around 300 GeV, thus can be observed or constrained by the forthcoming Fermi-LAT diffuse gamma-ray data.

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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