Solving the cosmic lithium problems with primordial late-decaying particles

被引：53

作者：

Cumberbatch, Daniel ^{[1
]}

Ichikawa, Kazuhide ^{[2
]}

Kawasaki, Masahiro ^{[2
]}

Kohri, Kazunori ^{[3
,4
]}

Silk, Joseph ^{[1
]}

Starkman, Glenn D. ^{[1
,5
]}

机构：

[1] Univ Oxford, Dept Astrophys, Oxford OX1 3RH, England

[2] Univ Tokyo, Inst Cosm Ray Res, Chiba 2778582, Japan

[3] Univ Lancaster, Dept Phys, Lancaster LA1 4YB, England

[4] Harvard Smithsonian Ctr Astrophys, Cambridge, MA 02138 USA

[5] Case Western Reserve Univ, Dept Phys, Cleveland, OH 44106 USA

来源：

PHYSICAL REVIEW D | 2007年 / 76卷 / 12期

关键词：

D O I：

10.1103/PhysRevD.76.123005

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We investigate the modifications to predictions for the abundances of light elements from standard big-bang nucleosynthesis when exotic late-decaying particles with lifetimes exceeding similar to 1 sec are prominent in the early Universe. Utilizing a model-independent analysis of the properties of these long-lived particles, we identify the parameter space associated with models that are consistent with all observational data and hence resolve the much discussed discrepancies between observations and theoretical predictions for the abundances of Li-7 and Li-6.

引用

页数：6

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