Mainly axion cold dark matter from natural supersymmetry

被引:55
作者
Bae, Kyu Jung [1 ]
Baer, Howard [1 ]
Chun, Eung Jin [2 ]
机构
[1] Univ Oklahoma, Dept Phys & Astron, Norman, OK 73019 USA
[2] Korea Inst Adv Study, Seoul 130722, South Korea
关键词
STRONG CP PROBLEM; AXINO; CONSERVATION; INVARIANCE; COSMOLOGY; BREAKING; MASS;
D O I
10.1103/PhysRevD.89.031701
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
By eschewing fine-tuning from the electroweak and QCD sectors of supersymmetry (natural supersymmetry or SUSY), and by invoking the Kim-Nilles solution to the SUSY mu problem, one is lead to models wherein the dark matter is comprised of a mixture of axions and Higgsino-like WIMPs. Over a large range of Peccei-Quinn breaking scale f(a) similar to 10(9)-10(12) GeV, one then expects about 90%-95% axion dark matter. In such a scenario, both axion and WIMP direct detection may be expected.
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页数:6
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