Solution to the baryon-dark-matter coincidence problem in the constrained minimal supersymmetric model with a 126-GeV Higgs boson

被引：5
作者：
Kamada, Ayuki [1 ,2 ]
Kawasaki, Masahiro [1 ,3 ]
Yamada, Masaki [1 ,3 ]
机构：
[1] Univ Tokyo, TODIAS, Kavli IPMU WPI, Kashiwa, Chiba 2778583, Japan
[2] Univ Calif Riverside, Dept Phys & Astron, Riverside, CA 92507 USA
[3] Univ Tokyo, ICRR, Kashiwa, Chiba 2778582, Japan
来源：
PHYSICAL REVIEW D | 2015年 / 91卷 / 08期
关键词：
ISOCURVATURE FLUCTUATIONS; Q-BALLS; BARYOGENESIS; PROGRAM; MECHANISM; MASSES; MSSM;
D O I：
10.1103/PhysRevD.91.081301
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We show that the baryon-dark-matter coincidence problem can be solved in the constrained minimal supersymmetric model. Baryons and dark matter are generated simultaneously through the late-time decay of nontopological solitons, Q-balls, which are formed after the Affleck-Dine baryogenesis. A certain relation between the universal scalar mass m(0) and the universal gaugino mass M-1/2 is required to solve the coincidence problem, marginally depending on the other parameters, and the result can be consistent with the observation of the 126-GeV Higgs boson. We also investigate the detectability in dark-matter direct-search experiments.
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页数：6
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