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language
eng
Author
Aoki, Mayumi Institute for Theoretical Physics, Kanazawa University
Haba, Naoyuki Graduate School of Science and Engineering, Shimane University
Takahashi, Ryo Graduate School of Science and Engineering, Shimane University : Graduate School of Science, Tohoku University
Description
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.
Subject
B40 Beyond the Standard Model
B54 Neutrino physics
Journal Title
Progress of theoretical and experimental physics
Volume
2015
Issue
11
Start Page
113B03
ISSN
20503911
Published Date
2015-11
DOI
Publisher
Oxford University Press
NII Type
Journal Article
Format
PDF
Rights
© 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
Text Version
出版社版
Gyoseki ID
e28408
OAI-PMH Set
Interdisciplinary Graduate School of Science and Engineering
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