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Casas-Ibarra parametrization and leptogenesis
Xing ZZ(邢志忠); Xing, ZZ
2010
发表期刊CHINESE PHYSICS C
卷号34期号:1页码:1-6
通讯作者Xing, ZZ (reprint author), Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
文章类型Article
摘要The Casas-Ibarra parametrization is a description of the Dirac neutrino mass matrix MD in terms of the neutrino mixing matrix V, an orthogonal matrix O and the diagonal mass matrices of light; and heavy Majorana neutrinos in the type-l seesaw mechanism. Because M(D)(dagger)M(D) is apparently independent of V but dependent on O in this parametrization, a number of authors have claimed that unflavored leptogenesis has nothing to do with CP violation at low energies. Here we question this logic by clarifying the physical meaning of O. We establish a clear relationship between O and the observable quantities, and find that O does depend on V. We show that both unflavored leptogenesis and flavored leptogenesis have no direct connection with low-energy CP violation.
关键词Casas-Ibarra parametrization type-I seesaw leptogenesis
学科领域Physics
收录类别SCI
WOS类目Physics, Nuclear ; Physics, Particles & Fields
WOS记录号WOS:000274095100001
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/225417
专题理论物理室
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GB/T 7714
Xing ZZ,Xing, ZZ. Casas-Ibarra parametrization and leptogenesis[J]. CHINESE PHYSICS C,2010,34(1):1-6.
APA 邢志忠,&Xing, ZZ.(2010).Casas-Ibarra parametrization and leptogenesis.CHINESE PHYSICS C,34(1),1-6.
MLA 邢志忠,et al."Casas-Ibarra parametrization and leptogenesis".CHINESE PHYSICS C 34.1(2010):1-6.
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