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ファイル
言語
英語
著者
青木 真由美 Institute for Theoretical Physics, Kanazawa University
波場 直之 Graduate School of Science and Engineering, Shimane University
高橋 亮 Graduate School of Science and Engineering, Shimane University : Graduate School of Science, Tohoku University
内容記述(抄録等)
We construct a model realizing the inverse seesaw mechanism. The model has two types of gauge singlet fermions in addition to right-handed neutrinos. A required Majorana mass scale (keV scale) for generating the light active neutrino mass in the conventional inverse seesaw can be naturally explained by a “seesaw” mechanism between the two singlet fermions in our model. We find that our model can decrease the magnitude of hierarchy among the mass parameters by O(10^4) from that in the conventional inverse seesaw model. We also show that a successful resonant leptogenesis occurs for generating the baryon asymmetry of the universe in our model. The desired mass degeneracy for the resonant leptogenesis can also be achieved by the “seesaw” between the two singlet fermions.
主題
B40 Beyond the Standard Model
B54 Neutrino physics
掲載誌名
Progress of theoretical and experimental physics
2015
11
開始ページ
113B03
ISSN
20503911
発行日
2015-11
DOI
出版者
Oxford University Press
資料タイプ
学術雑誌論文
ファイル形式
PDF
権利関係
© The Author(s) 2015. Published by Oxford University Press on behalf of the Physical Society of Japan.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.Funded by SCOAP3
著者版/出版社版
出版社版
業績ID
e28408
部局
(旧組織)大学院総合理工学研究科
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