New type of stable Q balls in gauge-mediated supersymmetry breaking

被引:84
作者
Kasuya, S [1 ]
Kawasaki, M [1 ]
机构
[1] Univ Tokyo, Res Ctr Early Universe, Bunkyo Ku, Tokyo 1130033, Japan
关键词
D O I
10.1103/PhysRevLett.85.2677
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We obtain a new type of a stable Q ball in the context of gauge-mediated supersymmetry breaking in the minimal supersymmetric standard model. It is a so-called gravity-mediation type of Q ball, but stable against the decay into nucleons, since the energy per unit charge is equal to gravitino mass m(3/2), which can be smaller than nucleon mass in the gauge-mediation mechanism. We consider the cosmological consequences in this new e-ball scenario, and find that this new type of Q ball can be considered as the dark matter and the source for the baryon number of the universe simultaneously.
引用
收藏
页码:2677 / 2680
页数:4
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