arXiv 0910.37412009-10-20hep-ph

规范-希格斯暗物质

Gauge-Higgs Dark Matter

Naoyuki Haba, Shigeki Matsumoto, Nobuchika Okada, Toshifumi Yamashita

备注：: 16 pages, 2 figures
DOI：: 10.1007/JHEP03(2010)064

摘要：

当在额外维度理论中对体场施加反周期边界条件时，与背景度规无关，反周期场中最轻的分量变得稳定，因此由于剩余的偶然离散对称性，在有效4D理论中是暗物质的良好候选者。注意到在规范-希格斯统一的情况下，反周期费米子的引入是由现象学的原因，我们调查的暗物质物理的情况下。作为一个例子，我们考虑了一个五维SO（5）$\timesU(1)_X$规范-Higgs统一模型在具有翘曲度规的$S^1/Z_2$上的紧化.由于规范-希格斯统一体的结构，暗物质粒子和标准模型粒子之间的相互作用在很大程度上受到规范对称性的控制，因此该模型对暗物质物理具有很强的预测能力。评估的暗物质遗迹丰度，我们确定了一个参数区域与目前的观测结果一致。此外，我们还计算了暗物质粒子与核子的弹性散射截面，发现其中一部分参数区域已经被目前的实验结果排除，无法直接进行暗物质搜索，大部分区域将在未来的实验中探索。

英文摘要：

When the anti-periodic boundary condition is imposed for a bulk field in extradimensional theories, independently of the background metric, the lightest component in the anti-periodic field becomes stable and hence a good candidate for the dark matter in the effective 4D theory due to the remaining accidental discrete symmetry. Noting that in the gauge-Higgs unification scenario, introduction of anti-periodic fermions is well-motivated by a phenomenological reason, we investigate dark matter physics in the scenario. As an example, we consider a five-dimensional SO(5)$\timesU(1)_X$ gauge-Higgs unification model compactified on the $S^1/Z_2$ with the warped metric. Due to the structure of the gauge-Higgs unification, interactions between the dark matter particle and the Standard Model particles are largely controlled by the gauge symmetry, and hence the model has a strong predictive power for the dark matter physics. Evaluating the dark matter relic abundance, we identify a parameter region consistent with the current observations. Furthermore, we calculate the elastic scattering cross section between the dark matter particle and nucleon and find that a part of the parameter region is already excluded by the current experimental results for the direct dark matter search and most of the region will be explored in future experiments.

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。

摘要：

英文摘要：

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