研究者総覧
論文
- タイトル
- タイトル（英）
- Modulus τ linking leptonic CP violation to baryon asymmetry in A4 modular invariant flavor model
- 参照URL
- https://researchmap.jp/takahiro-yoshida/published_papers/33960622
- 著者
- 著者（英）
- Hiroshi Okada,Yusuke Shimizu,Morimitsu Tanimoto,Takahiro Yoshida
- 担当区分
- 概要
- 概要（英）
A<sc>bstract</sc> We propose anA 4 modular invariant flavor model of leptons, in which both CP and modular symmetries are broken spontaneously by the vacuum expectation value of the modulusτ . The value of the modulusτ is restricted by the observed lepton mixing angles and lepton masses for the normal hierarchy of neutrino masses. The predictive Dirac CP phaseδ CP is in the ranges [0°, 50°], [170°, 175°] and [280°, 360°] for Re [τ ]< 0, and [0°, 80°], [185°, 190°] and [310°, 360°] for Re [τ ]> 0. The sum of three neutrino masses is predicted in [60, 84] meV, and the effective mass for the 0νββ decay is in [0.003, 3] meV. The modulusτ links the Dirac CP phase to the cosmological baryon asymmetry (BAU) via the leptogenesis. Due to the strong wash-out effect, the predictive baryon asymmetryY B can be at most the same order of the observed value. Then, the lightest right-handed neutrino mass is restricted in the range ofM 1 = [1. 5, 6. 5] × 1013 GeV. We find the correlation between the predictiveY B and the Dirac CP phaseδ CP . Only two predictiveδ CP ranges, [5°, 40°] (Re [τ ]> 0) and [320°, 355°] (Re [τ ]< 0) are consistent with the BAU.- 出版者・発行元
- 出版者・発行元（英）
- Springer Science and Business Media LLC
- 誌名
- 誌名（英）
- Journal of High Energy Physics
- 巻
- 2021
- 号
- 7
- 開始ページ
- 終了ページ
- 出版年月
- 2021年7月
- 査読の有無
- 査読有り
- 招待の有無
- 掲載種別
- 研究論文（学術雑誌）
- ISSN
- DOI URL
- https://doi.org/10.1007/jhep07(2021)184
- 共同研究・競争的資金等の研究課題
研究者
𠮷田 貴裕
(ヨシダ タカヒロ)