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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
Source PublicationPHYSICAL REVIEW D
KeywordLepton-number Violation Heavy Majorana Neutrinos Probe Wmap Observations Weinberg-salam Theory Electroweak Baryogenesis Non-conservation Cp Violation Super-kamiokande Baryon Asymmetry Early Universe
AbstractIn 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
Volume69Issue:11Pages:-
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:57[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/14070
Collection理论物理所科研产出_SCI论文
Corresponding AuthorBi, XJ , Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100039, Peoples R China.
Recommended Citation
GB/T 7714
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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