Relic density of neutralino dark matter in the MSSM with CP violation

被引：42

作者：

Belanger, G.

Boudjema, F.

Kraml, S.

Pukhov, A.

Semenov, A.

机构：

[1] LAPTH, F-74941 Annecy Le Vieux, France

[2] CERN, Dept Phys, Div Theory, CH-1211 Geneva 23, Switzerland

[3] Moscow MV Lomonosov State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119992, Russia

[4] Joint Inst Nucl Res, Dubna 141980, Russia

来源：

PHYSICAL REVIEW D | 2006年 / 73卷 / 11期

关键词：

D O I：

10.1103/PhysRevD.73.115007

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the relic density of dark matter in the MSSM with CP violation. We analyze various scenarios of neutralino annihilation: the cases of a b-ino, b-ino-W-ino and b-ino-Higgsino LSP, annihilation through Higgs, as well as sfermion coannihilation scenarios. Large phase effects are found-on the one hand, due to shifts in the masses; on the other hand, due to modifications of the couplings. Taking special care to disentangle the effects in masses and couplings, we demonstrate that the presence of CP phases can have a significant influence on the neutralino relic abundance. Typical variations in Omega h(2) solely from modifications in the couplings are O (10%-100%), but can reach an order of magnitude in some cases.

引用

页数：22

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