arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0811.1598hep-phastro-phhep-th
收藏

非最小泛额外维

Non-minimal universal extra dimensions

Thomas Flacke, A. Menon, Daniel J. Phalen

摘要:

本文研究了普适额外维(UED)模型中边界定域项(BLT)的唯象意义。特别地,我们研究了由BLT产生的电弱Kaluza-Klein质谱以及它们通过五维Higgs机制对电弱对称性破缺的影响。我们发现,除了BLT的大规模五维场诱导非平凡的额外的零和非零卡鲁扎-克莱因(KK)模式的维轮廓。因此,BLT通常导致标准模型参数的修改,因此即使在树级也受到实验约束。我们详细研究了标准模型对三个典型的非极小UED模型的约束,发现对BLT的约束较弱。相反,非零BLT对非零KK模式的频谱和耦合有重大影响。例如,在参数空间的某些区域中,LKP要么是卡鲁扎-克莱因希格斯玻色子玻色子,要么是W ^3的第一种KK模式。

英文摘要:

In this paper we investigate the phenomenological implications of boundary localized terms (BLTs) in the model of Universal Extra Dimensions (UED). In particular, we study the electroweak Kaluza-Klein mass spectrum resulting from BLTs and their effect on electroweak symmetry breaking via the five dimensional Higgs mechanism. We find that the addition of BLTs to massive five dimensional fields induces a non-trivial extra dimensional profile for the zero and non-zero Kaluza-Klein (KK) modes. Hence BLTs generically lead to a modification of Standard Model parameters and are therefore experimentally constrained, even at tree level. We study Standard Model constraints on three representative non-minimal UED models in detail and find that the constraints on BLTs are weak. On the contrary, non-zero BLTs have a major impact on the spectrum and couplings of non-zero KK modes. For example, there are regions of parameter space where the Lightest Kaluza-Klein particle (LKP) is either the Kaluza-Klein Higgs boson or the first KK mode of the W^3.

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。

↑