Soft leptogenesis and gravitino dark matter in gauge mediation

被引：4
|
作者：
Hamaguchi, Koichi [1 ,2 ]
Yokozaki, Norimi [1 ]
机构：
[1] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan
[2] Univ Tokyo, Inst Phys & Math Universe, Chiba 2778568, Japan
来源：
PHYSICS LETTERS B | 2011年 / 694卷 / 4-5期
关键词：
Gravitino dark matter; Leptogenesis; DYNAMICAL SUPERSYMMETRY BREAKING; BARYON-NUMBER NONCONSERVATION; BARYOGENESIS; CONSTRAINTS; PHYSICS;
D O I：
10.1016/j.physletb.2010.10.031
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We study soft leptogenesis in gauge mediated supersymmetry breaking models with an enhanced A-term for the right-handed neutrino. We find that this scenario can explain the baryon asymmetry of the present universe, consistently with the gravitino dark matter for a wide range of gravitino mass m(3/2) = O(MeV)-O(GeV). We also propose an explicit model which induces the necessary A-term for the right-handed neutrino. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：398 / 401
页数：4
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