Improved bounds on universal extra dimensions and consequences for Kaluza-Klein dark matter

被引：32
|
作者：
Flacke, Thomas
Hooper, Dan
March-Russell, John
机构：
[1] Univ Oxford, Rudolf Peierls Ctr Theoret Phys, Oxford OX1 3NP, England
[2] Fermilab Natl Accelerator Lab, Theoret Astrophys Ctr, Batavia, IL 60510 USA
[3] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England
[4] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA
来源：
PHYSICAL REVIEW D | 2006年 / 73卷 / 09期
关键词：
D O I：
10.1103/PhysRevD.73.095002
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study constraints on models with a flat universal extra dimension in which all standard model fields propagate in the bulk. A significantly improved constraint on the compactification scale is obtained from the extended set of electroweak precision observables accurately measured at LEP1 and LEP2. We find a lower bound of M-c=R-1 > 700(800) GeV at the 99% (95%) confidence level. We also discuss the implications of this constraint on the prospects for the direct and indirect detection of Kaluza-Klein dark matter in this model.
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页数：8
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