arXiv 1801.006862018-01hep-ph

5D规范-希格斯统一中的费米最小暗物质

Fermionic Minimal Dark Matter in 5D Gauge-Higgs Unification

Nobuhito Maru, Nobuchika Okada, Satomi Okada

备注：: 33 pages, 4 figures, to be published in Physical Review D. arXiv admin note: substantial text overlap with arXiv:1704.04621
发表信息：: Phys. Rev. D 96, 115023 (2017)
DOI：: 10.1103/PhysRevD.96.115023

摘要：

我们在一个简单的规范-希格斯统一（GHU）模型的背景下提出了一个最小暗物质（MDM）方案，该模型基于5维Minkowski空间中的规范群SU（3）x U（1）'，并在S^1/Z_2轨道上进行了5维紧化.在体中引入一对高维表示的矢量SU（3）多重态费米子，DM粒子被认为是多重态中质量最轻的本征态。在最初的模型描述中，DM粒子与标准模型（SM）粒子的通信仅通过体规范相互作用，因此我们的模型是MDM方案的GHU版本。在四维有效理论中，DM粒子有两种典型的实现形式：（i）DM粒子主要由SM SU（2）_L多重态构成;（ii）DM粒子主要由SM SU（2）_L单重态构成。由于情况（i）与原始MDM场景非常相似，因此我们将重点放在情况（ii）上，这是Higgs门户DM场景在GHU模型上下文中的实现。我们确定了一个允许的参数区域，以符合目前的实验约束，这将是完全覆盖的直接暗物质探测实验在不久的将来。在高维$SU(3)$表象中，在体多重态费米子存在的情况下，通过Higgs四次耦合的重整化群演化，在10-100 TeV的紧致化尺度下，我们再现了125 GeV的希格斯玻色子质量.

英文摘要：

We propose a Minimal Dark Matter (MDM) scenario in the context of a simple gauge-Higgs Unification (GHU) model based on the gauge group SU(3) x U(1)' in 5-dimensional Minkowski space with a compactification of the 5th dimension on S^1/Z_2 orbifold. A pair of vector-like SU(3) multiplet fermions in a higher-dimensional representation is introduced in the bulk, and the DM particle is identified with the lightest mass eigenstate among the components in the multiplets. In the original model description, the DM particle communicates with the Standard Model (SM) particles only through the bulk gauge interaction, and hence our model is the GHU version of the MDM scenario. There are two typical realizations of the DM particle in 4-dimensional effective theory: (i) the DM particle is mostly composed of the SM SU(2)_L multiplets, or (ii) the DM is mostly composed of the SM SU(2)_L singlets. Since the case (i) is very similar to the original MDM scenario, we focus on the case (ii), which is a realization of the Higgs-portal DM scenario in the context of the GHU model. We identify an allowed parameter region to be consistent with the current experimental constraints, which will be fully covered by the direct dark matter detection experiments in the near future. In the presence of the bulk multiplet fermions in higher-dimensional $SU(3)$ representations, we reproduce the 125 GeV Higgs boson mass through the renormalization group evolution of Higgs quartic coupling with the compactification scale of 10-100 TeV.

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摘要：

英文摘要：

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