Sommerfeld enhancement from unparticle exchange for dark matter annihilation

被引：6
|
作者：
Chen, Chuan-Hung [3 ,4 ]
Kim, C. S. [1 ,2 ,5 ]
机构：
[1] Yonsei Univ, Dept Phys, Seoul 120749, South Korea
[2] Yonsei Univ, IPAP, Seoul 120749, South Korea
[3] Natl Cheng Kung Univ, Dept Phys, Tainan 701, Taiwan
[4] Natl Ctr Theoret Sci, Hsinchu 300, Taiwan
[5] Univ Tokyo, IPMU, Chiba 2778568, Japan
来源：
PHYSICS LETTERS B | 2010年 / 687卷 / 2-3期
关键词：
Unparticle; Sommerfeld factor; Dark matter; WIMP; ABUNDANCE; ENERGIES;
D O I：
10.1016/j.physletb.2010.03.054
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We investigate the implication of unparticle exchange for the possible Sommerfeld enhancement in dark matter annihilation process. Assuming the unparticle exchange during WIMP collision, we solve the Schrodinger equation for the effective potential, and find that the Sommerfeld enhancement factor is dictated by the scale dimension of unparticle as 1/v(3-2d)u. Numerically the Sommerfeld enhancement could be O(10-10(3)). (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：232 / 235
页数：4
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