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Tri-bimaximal neutrino mixing and flavor-dependent resonant leptogenesis
Xing ZZ(邢志忠); Zhou S(周顺); Xing, ZZ; Zhou, S
2007
发表期刊PHYSICS LETTERS B
卷号653期号:2-4页码:#REF!
通讯作者Zhou, S (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
摘要We propose a particularly economical neutrino mass model, in which there are only two right-handed Majorana neutrinos of O(l) TeV and their masses are highly degenerate. Its novel Yukawa-coupling texture together with the seesaw mechanism allows us to achieve the normal neutrino mass hierarchy with m(1) = 0 and a nearly tri-bimaiimal neutrino mixing pattern with the maximal CP-violating phase: theta(23) = pi/4, \delta\ = pi/2 and sin(2) theta(12) = (1 - 2tan(2) theta(13))/3. One may also obtain the inverted neutrino mass hierarchy with m(3) = 0 and the corresponding neutrino mixing pattern with theta(23) = pi/4 and theta(13) = delta = 0. In both cases, it is possible to interpret the cosmological baryon number asymmetry eta(B) approximate to 6.1 x 10(-10) through the resonant leptogenesis mechanism. We demonstrate the significance of flavor-dependent effects in this leptogenesis scenario: they can either flip the sign of the flavor-independent prediction for eta(B) in the m(1) = 0 case or magnify the magnitude of the flavor-independent prediction for eta(B) about 50 times in the m(3) = 0 case. (C) 2007 Elsevier BN. All rights reserved.
学科领域Physics
DOI10.1016/j.physletb.2007.08.009
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000250074000026
引用统计
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227363
专题理论物理室
推荐引用方式
GB/T 7714
Xing ZZ,Zhou S,Xing, ZZ,et al. Tri-bimaximal neutrino mixing and flavor-dependent resonant leptogenesis[J]. PHYSICS LETTERS B,2007,653(2-4):#REF!.
APA 邢志忠,周顺,Xing, ZZ,&Zhou, S.(2007).Tri-bimaximal neutrino mixing and flavor-dependent resonant leptogenesis.PHYSICS LETTERS B,653(2-4),#REF!.
MLA 邢志忠,et al."Tri-bimaximal neutrino mixing and flavor-dependent resonant leptogenesis".PHYSICS LETTERS B 653.2-4(2007):#REF!.
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