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Enhanced electromagnetic transition dipole moments and radiative decays of massive Majorana neutrinos thanks to the seesaw-induced non-unitary effects
Xing ZZ(邢志忠); 周也铃;Xing, ZZ; Zhou, YL
2012
发表期刊PHYSICS LETTERS B
卷号715期号:1-3页码:178-182
摘要In an extension of the standard electroweak theory where the phenomenon of lepton flavor mixing is described by a 3 x 3 unitary matrix V, the electric and magnetic dipole moments of three active neutrinos are suppressed not only by their tiny masses but also by the Glashow-Iliopoulos-Maiani (GIM) mechanism. We show that it is possible to lift the GIM suppression if the canonical seesaw mechanism of neutrino mass generation, which allows V to be slightly non-unitary, is taken into account. In view of current experimental constraints on the non-unitarity of V, we find that the effective electromagnetic transition dipole moments of three light Majorana neutrinos and the rates of their radiative decays can be maximally enhanced by a factor of O(10(2)) and a factor of O(10(4)), respectively. This novel observation reveals an intrinsic and presumably significant correlation between the electromagnetic properties of massive neutrinos and the origin of their small masses. (c) 2012 Elsevier B.V. All rights reserved.
学科领域Physics
DOI10.1016/j.physletb.2012.07.043
收录类别SCI
WOS记录号WOS:000308519000024
引用统计
被引频次:4[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/311005/223883
专题理论物理室
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Xing ZZ,周也铃;Xing, ZZ,Zhou, YL. Enhanced electromagnetic transition dipole moments and radiative decays of massive Majorana neutrinos thanks to the seesaw-induced non-unitary effects[J]. PHYSICS LETTERS B,2012,715(1-3):178-182.
APA 邢志忠,周也铃;Xing, ZZ,&Zhou, YL.(2012).Enhanced electromagnetic transition dipole moments and radiative decays of massive Majorana neutrinos thanks to the seesaw-induced non-unitary effects.PHYSICS LETTERS B,715(1-3),178-182.
MLA 邢志忠,et al."Enhanced electromagnetic transition dipole moments and radiative decays of massive Majorana neutrinos thanks to the seesaw-induced non-unitary effects".PHYSICS LETTERS B 715.1-3(2012):178-182.
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