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Non-thermal production of neutralino cold dark matter from cosmic string decays
Jeannerot, R; Zhang, XM; Brandenberger, R
1999
发表期刊JOURNAL OF HIGH ENERGY PHYSICS
期号12页码:3
通讯作者Int Ctr Theoret Phys, I-34014 Trieste, Italy ; CCAST, World Lab, Beijing 100080, Peoples R China ; Acad Sinica, Inst High Energy Phys, Beijing 100039, Peoples R China ; Brown Univ, Dept Phys, Providence, RI 02912 USA
文章类型Article
摘要Cosmic strings form in many extensions of the MSSM, in particular in models with an extra U(1) gauge symmetry. We propose a new production mechanism for neutralino cold dark matter in such models. We show that if the strings forming scale is less than about 10(8) GeV, the dark matter produced from strings can overclose the universe. The mass of the new U(1) gauge boson must be much larger than the Fermi scale which makes it unobservable in upcoming accelerator experiments. In supersymmetric models with an extra UB-L(1) gauge symmetry, the requirement of Omega less than or equal to 1 puts an upper bound on the neutrino mass of about 30 eV provided neutrino masses are generated by the see-saw mechanism.
关键词cosmology of theories beyond the SM cosmological phase transitions dark matter physics of the early universe
学科领域Physics
研究领域[WOS]Physics ; Physics
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Particles & Fields
WOS记录号WOS:000085757200003
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文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/240347
专题理论物理室
作者单位中国科学院高能物理研究所
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Jeannerot, R,Zhang, XM,Brandenberger, R. Non-thermal production of neutralino cold dark matter from cosmic string decays[J]. JOURNAL OF HIGH ENERGY PHYSICS,1999(12):3.
APA Jeannerot, R,Zhang, XM,&Brandenberger, R.(1999).Non-thermal production of neutralino cold dark matter from cosmic string decays.JOURNAL OF HIGH ENERGY PHYSICS(12),3.
MLA Jeannerot, R,et al."Non-thermal production of neutralino cold dark matter from cosmic string decays".JOURNAL OF HIGH ENERGY PHYSICS .12(1999):3.
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