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arXiv 0907.4993hep-ph
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一个6维洛伦兹不变性的暗物质候选者

A Dark Matter candidate from Lorentz Invariance in 6 Dimensions

Giacomo Cacciapaglia, Aldo Deandrea, Jeremie Llodra-Perez

摘要:

我们研究了独特的6维orbifold与手征费米子的一个稳定的暗物质候选人是目前由于洛伦兹不变性的orbifold,没有额外的离散对称性强加的手。我们提出了一个宇宙额外维度模型,其中几百GeV的标量光子是暗物质的良好候选者。该模型的光谱具有几何特征,与以前的卡鲁扎-克莱因暗物质模型相比,具有明显的区别特征。该模型的5维极限是自然界卡鲁扎-克莱因暗物质的极小模型。尽管宇宙学倾向于低质量范围,但由于在同一KK能级中状态之间的分裂相对较小,该模型对LHC来说将是一个挑战。

英文摘要:

We study the unique 6 dimensional orbifold with chiral fermions where a stable dark matter candidate is present due to Lorentz invariance on the orbifold, with no additional discrete symmetries imposed by hand. We propose a model of Universal Extra Dimensions where a scalar photon of few hundred GeV is a good candidate for dark matter. The spectrum of the model is characteristic of the geometry, and it has clear distinctive features compared to previous models of Kaluza-Klein dark matter. The 5 dimensional limit of this model is the minimal model of natural Kaluza-Klein dark matter. Notwithstanding the low mass range preferred by cosmology, the model will be a challenge for the LHC due to the relatively small splitting between the states in the same KK level.

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