| Item type |
デフォルトアイテムタイプ_（フル）(1) |
| 公開日 |
2023-03-18 |
| タイトル |
|
|
タイトル |
Cosmological family asymmetry and CP violation |
|
言語 |
en |
| 作成者 |
Fujihara, Takahiro
Kaneko, Satoru
Kang, Sin Kyu
Kimura, Daiji
Morozumi, Takuya
Tanimoto, Morimitsu
|
| アクセス権 |
|
|
アクセス権 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 権利情報 |
|
|
権利情報 |
Copyright (c) 2005 The American Physical Society. |
| 内容記述 |
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|
内容記述 |
We discuss how the cosmological baryon asymmetry can be achieved by the lepton family asymmetries of heavy Majorana neutrino decays and how the lepton family asymmetries are related to CP violation in neutrino oscillation, in the minimal seesaw model with two heavy Majorana neutrinos. We derive the most general formula for CP violation in neutrino oscillation in terms of the heavy Majorana masses and Yukawa mass term. It is shown that the formula is very useful to classify several models in which e, μ, and τ leptogenesis can be separately realized and to see how they are connected with low energy CP violation. To make the models predictive, we take texture with two zeros in the Dirac matrix. In particular, we find some interesting cases in which CP violation in neutrino oscillation can happen while lepton family asymmetries do not exist at all. On the contrary, we can find e-, μ-, and τ-leptogenesis scenarios in which the cosmological CP violation and low energy CP violation measurable via neutrino oscillations are very closely related to each other. By determining the allowed ranges of the parameters in the models, we predict the sizes of CP violation in neutrino oscillation and |Ve3MNS|. Finally, the leptonic unitarity triangles are reconstructed. |
|
言語 |
en |
| 出版者 |
|
|
出版者 |
American Physical Society |
| 言語 |
|
|
言語 |
eng |
| 資源タイプ |
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|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 関連情報 |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
10.1103/PhysRevD.72.016006 |
| 関連情報 |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
http://dx.doi.org/10.1103/PhysRevD.72.016006 |
| 収録物識別子 |
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|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
1550-7998 |
| 収録物識別子 |
|
|
収録物識別子タイプ |
NCID |
|
収録物識別子 |
AA00773624 |
| 開始ページ |
|
|
開始ページ |
016006-1 |
| 書誌情報 |
Physical Review D - Particles, Fields, Gravitation and Cosmology
Physical Review D - Particles, Fields, Gravitation and Cosmology
巻 72,
号 1,
p. 016006-1-016006-12,
発行日 2005-07-27
|
| 旧ID |
19282 |
PhysRevD_72_016006.pdf (1.2 MB)
