Constraints on split universal extra dimensions from electroweak precision tests

被引：14
|
作者：
Flacke, Thomas [1 ]
Pasold, Christian [1 ]
机构：
[1] Univ Wurzburg, Inst Theoret Phys & Astrophys, D-97074 Wurzburg, Germany
来源：
PHYSICAL REVIEW D | 2012年 / 85卷 / 12期
关键词：
DARK-MATTER; IMPACT;
D O I：
10.1103/PhysRevD.85.126007
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present strongly improved electroweak precision constraints on the split-UED (universal extra dimension) model. We find that the dominating effect arises from contributions to the muon decay rate by the exchange of even-numbered W boson Kaluza-Klein modes at tree level, which so far have not been discussed in the context of UED models. The constraints on the split-UED parameter space are translated into bounds on the mass difference of the first Kaluza-Klein mode of fermions and the lightest Kaluza-Klein mode, which will be tested at the LHC.
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页数：4
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