Dark matter in UED: the role of the second KK level

被引：52
|
作者：
Belanger, G. [1 ]
Kakizaki, M. [1 ,2 ]
Pukhov, A. [3 ]
机构：
[1] Univ Savoie, CNRS, LAPTH, F-74940 Annecy Le Vieux, France
[2] Univ Hamburg, Inst Theoret Phys, D-22761 Hamburg, Germany
[3] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia
来源：
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS | 2011年 / 02期
基金：
俄罗斯基础研究基金会;
关键词：
dark matter theory; extra dimensions; UNIVERSAL EXTRA DIMENSIONS; SCATTERING; ABUNDANCE; SEARCH; MODEL;
D O I：
10.1088/1475-7516/2011/02/009
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We perform a complete calculation of the relic abundance of the KK-photon LKP in the universal extra dimension model including all coannihilation channels and all resonances. We show that the production of level 2 particles which decay dominantly into SM particles contribute significantly to coannihilation processes involving level 1 KK-leptons. As a result the preferred dark matter scale is increased to R-1 = 1.3 TeV. A dark matter candidate at or below the TeV scale can only be found in the non-minimal model by reducing the mass splittings between the KK-particles and the LKP. The LKP nucleon scattering cross section is typically small, sigma < 10(-10) pb, unless the KK-quarks are nearly degenerate with the LKP.
引用
收藏
页数：18
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