Non-thermal dark matter and the moduli problem in string frameworks

被引：168

作者：

Acharya, Bobby S. ^{[1
,2
,3
]}

Bobkov, Konstantin ^{[3
]}

Kane, Gordon ^{[3
]}

Shao, Jing ^{[3
]}

Watson, Scott ^{[3
]}

机构：

[1] Abdus Salam Int Ctr Theoret Phys, Str Costiera 11, I-34014 Trieste, Italy

[2] Ist Nazl Fis Nucl, Sezione Trieste, I-34014 Trieste, Italy

[3] Univ Michigan, Michigan Ctr Theoret Phys, Ann Arbor, MI 48109 USA

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2008年 / 06期

关键词：

cosmology of theories beyond the SM; supersymmetry phenomenology;

D O I：

10.1088/1126-6708/2008/06/064

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

We address the cosmological moduli/gravitino problems and the issue of too little thermal but excessive non-thermal dark matter from the decays of moduli. The main examples we study are the G(2)-MSSM models arising from M theory compactifications, which allow for a precise calculation of moduli decay rates and widths. We find that the late decaying moduli satisfy both BBN constraints and avoid the gravitino problem. The non-thermal production of Wino LSPs, which is a prediction of G(2)-MSSM models, gives a relic density of about the right order of magnitude.

引用

页数：48