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

被引：53

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

页数：18