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Bi, XJ; Gu, PH; Wang, XL; Zhang, XM; Bi, XJ , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China.
Thermal leptogenesis in a model with mass varying neutrinos
发表期刊PHYSICAL REVIEW D
关键词Lepton-number Violation Heavy Majorana Neutrinos Probe Wmap Observations Weinberg-salam Theory Electroweak Baryogenesis Non-conservation Cp Violation Super-kamiokande Baryon Asymmetry Early Universe
摘要In this paper we consider the possibility of the neutrino mass varying during the evolution of the Universe and study its implications on leptogenesis. Specifically, we take the minimal seesaw model of neutrino masses and introduce a coupling between the right-handed neutrinos and the dark energy scalar field, the quintessence. In our model, the right-handed neutrino masses change as the quintessence evolves. We then examine in detail the parameter space of this model allowed by the observed baryon number asymmetry. Our results show that it is possible to lower the reheating temperature in this scenario in comparison with the case that the neutrino masses are unchanged, which helps solve the gravitino problem. Furthermore, a degenerate neutrino mass pattern with m(i) larger than the upper limit given in the minimal leptogenesis scenario is permitted.
2004
ISSN1550-7998
卷号69期号:11页码:-
学科领域Physics
收录类别SCI
引用统计
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14070
专题理论物理所科研产出_SCI论文
通讯作者Bi, XJ , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China.
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Bi, XJ,Gu, PH,Wang, XL,et al. Thermal leptogenesis in a model with mass varying neutrinos[J]. PHYSICAL REVIEW D,2004,69(11):-.
APA Bi, XJ,Gu, PH,Wang, XL,Zhang, XM,&Bi, XJ , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China..(2004).Thermal leptogenesis in a model with mass varying neutrinos.PHYSICAL REVIEW D,69(11),-.
MLA Bi, XJ,et al."Thermal leptogenesis in a model with mass varying neutrinos".PHYSICAL REVIEW D 69.11(2004):-.
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