标题： 一个来自六维洛伦兹不变性的暗物质候选者 显示英文标题

标题： A Dark Matter candidate from Lorentz Invariance in 6 Dimensions

摘要： 我们研究了一个具有手征费米子的唯一六维轨道空间，由于轨道空间上的洛伦兹不变性，存在一个稳定的暗物质候选者，而无需人为引入额外的离散对称性。 我们提出一个普遍额外维度模型，其中几百年GeV量级的标量光子是暗物质的良好候选者。 该模型的谱系具有几何特征，并与之前的Kaluza-Klein暗物质模型相比有明显的特点。 该模型的五维极限是最小的自然Kaluza-Klein暗物质模型。 尽管宇宙学更倾向于较低的质量范围，但由于同一KK层级中的状态之间分裂较小，该模型将对LHC构成挑战。 显示英文摘要

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.