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2008 Fiscal Year Final Research Report

Flavor Symmetry and Origin of Neutrino Mass Matrix

Research Project

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Project/Area Number 17540243
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionNiigata University

Principal Investigator

TANIMOTO Morimitsu  Niigata University, 自然科学系, 教授 (90108366)

Co-Investigator(Kenkyū-buntansha) NAKANO Hiroaki  新潟大学, 自然科学系, 教授 (60262424)
Project Period (FY) 2005 – 2008
Keywordsフレーバー対称性 / フレーバー混合 / 非可換離散対称性
Research Abstract

非可換離散対称性を世代対称性として導入し、その現象論的帰結を明らかにした。S4,Delata(54)の対称性は、A4 対称性と同様、レプトンのフレーバー混合に対して実験が示唆するTri-bimaximal mixing を導くことを発見した。さらに、S4 対称性はSU(5)大統一理論を用いると、レプトンのTri-bimaximal mixing を再現すると同時に、クォークのフレーバー混合であるカビボ角を15 度とすることを明らかにした。また、フレーバー対称性のモデルを超対称性化し、スレプトンの質量行列を解析して、フレーバーの変化する中性カレント(FCNC)の大きさを求めた。これらの予言はLHC の実験で検証される。

  • Research Products

    (27 results)

All 2009 2008 2007 2006 2005 Other

All Journal Article (21 results) Presentation (4 results) Book (1 results) Remarks (1 results)

  • [Journal Article] S(4) Flavor Symmetry of Quarks and Leptons in SU(5) GUT2009

    • Author(s)
      Hajime Ishimori, Yusuke Shimizu,Morimitsu Tanimoto,
    • Journal Title

      Progress of Theoretical Physics 121

      Pages: 769-787

  • [Journal Article] Lepton Flavor Model from Delta(54) Symmetry2009

    • Author(s)
      Hajime Ishimori, Tatsuo Kobayashi, Hiroshi Okada, Yusuke Shimizu, MorimitsuTanimoto,
    • Journal Title

      JHEP 0904 : 011

  • [Journal Article] Soft supersymmetry breaking terms fromA(4) lepton flavor symmetry2008

    • Author(s)
      Hajime Ishimori, Tatsuo Kobayashi, Yuji Omura, Morimitsu Tanimoto
    • Journal Title

      JHEP 0812 : 082

  • [Journal Article] Tri-bimaximal Mixing from Cascades2008

    • Author(s)
      Naoyuki Haba, Ryo Takahashi, Morimitsu Tanimoto, Koichi Yoshioka
    • Journal Title

      Phys.Rev. D78 : 113002

  • [Journal Article] Soft supersymmetry breaking terms fromD(4) x Z(2) lepton flavor symmetry2008

    • Author(s)
      Hajime Ishimori, Tatsuo Kobayashi, Hiroshi Ohki, Ryo Takahashi, MorimitsuTanimoto
    • Journal Title

      Phys.Rev. D77, 115005

  • [Journal Article] D(4) Flavor Symmetry for Neutrino Masses and Mixing2008

    • Author(s)
      Hajime Ishimori, Tatsuo Kobayashi, Hiroshi Ohki, Ryo Takahashi, Morimitsu Tanimoto,
    • Journal Title

      Physics Letters B662

      Pages: 178-184

  • [Journal Article] Deviation from tri-bimaximal neutrino mixing in A(4) flavor symmetry2008

    • Author(s)
      Mizue Honda, Morimitsu Tanimoto
    • Journal Title

      Progress of Theoretical Physics 119

      Pages: 583-598

  • [Journal Article] False Vacuum in the Supersymmetric Mass Varying Neutrinos Model2008

    • Author(s)
      Ryo Takahashi, Morimitsu Tanimoto
    • Journal Title

      Phys.Rev. D77

      Pages: 045015

  • [Journal Article] Flavor Symmetry and Vacuum Aligned Mass Textures2007

    • Author(s)
      Satoru Kaneko, Hideyuki Sawanaka, Takaya Shingai, Morimitsu Tanimoto, Koichi Yoshioka
    • Journal Title

      Progress of Theoretical Physics 117

      Pages: 161-181

  • [Journal Article] Examining the Geometrical Model with Inverted Mass Hierarchy for Neutrinos2007

    • Author(s)
      Mizue Honda, Morimitsu Tanimoto
    • Journal Title

      Phys. Rev. D75

      Pages: 096005

  • [Journal Article] Can symmetric texture reproduce unitarity triangle and m(b)/m(tau)?2007

    • Author(s)
      Masako Bando, Satoru Kaneko, Midori Obara, Morimitu Tanimoto
    • Journal Title

      Progress of Theoretical Physics 116

      Pages: 1105-1115

  • [Journal Article] Soft Supersymmetry Breaking at Heavy Chiral Threshold2007

    • Author(s)
      Hiroyuki Matsuura, Hiroaki Nakano, Koichi Yoshioka
    • Journal Title

      Progress of Theoretical Physics 117

      Pages: 395-400

  • [Journal Article] Quark Masses and Mixing with A4 Family Symmetry2006

    • Author(s)
      Ernest Ma, Hideyuki Sawanaka, Morimitsu Tanimoto
    • Journal Title

      Physics Letters 641B

      Pages: 301-304

  • [Journal Article] The Effect of supersymmetry breaking in the mass varying neutrinos2006

    • Author(s)
      Ryo Takahashi, Morimitsu Tanimoto
    • Journal Title

      Phys. Rev. D74

      Pages: 055002

  • [Journal Article] Speed of sound in the mass varying neutrinos scenario2006

    • Author(s)
      Ryo Takahashi, Morimitsu Tanimoto
    • Journal Title

      JHEP 0605

      Pages: 021

  • [Journal Article] A Higher-dimensional origin of the inverted mass hierarchy for neutrino2006

    • Author(s)
      M. Tanimoto, T. Yanagida
    • Journal Title

      Physics Letters B633

      Pages: 567-572

  • [Journal Article] mu-tau antisymmetry and neutrino mass matrices2006

    • Author(s)
      Walter Grimus, Satoru Kaneko, Luis Lavoura, Hideyuki Sawanaka, Morimitsu Tanimoto
    • Journal Title

      JHEP 0601

      Pages: 110

  • [Journal Article] Embedding the texture of the neutrino mass matrix into the MaVaNs scenario2006

    • Author(s)
      Mizue Honda, Ryo Takahashi, Morimitsu Tanimoto
    • Journal Title

      JHEP 0601

      Pages: 042

  • [Journal Article] Model of mass varying neutrinos in SUSY2006

    • Author(s)
      Ryo Takahashi, Morimitsu Tanimoto
    • Journal Title

      Physics Letters B633

      Pages: 675-680

  • [Journal Article] Cosmological family asymmetry and CP violation2005

    • Author(s)
      T. Fujihara, S. Kaneko, Sin Kyu Kang, D. Kimura, T. Morozumi, M. Tanimoto
    • Journal Title

      Phys.Rev. D72

      Pages: 0160

  • [Journal Article] Hybrid Textures of Neutrinos2005

    • Author(s)
      Satru kaneko, Hideyuki Sawanaka, Morimitsu Tanimoto
    • Journal Title

      JHEP 0508

      Pages: 073

  • [Presentation] False Vacuum in the Supersymmetric Mass Varying Neutrino Model2008

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      DSU'08, 4th International Workshop on the Dark Side of the Universe
    • Place of Presentation
      The British University in Egypt (BUE), Cairo, Egypt
    • Year and Date
      20080601-05
  • [Presentation] Mass and mixing of quark-lepton in the nonabelian discrete symmetry2006

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Challenges in Particel Astrophysics
    • Place of Presentation
      Hanoi, Vietnam
    • Year and Date
      20060806-12
  • [Presentation] Mass Varying Neutrinos in SUSY2006

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Planck'06 From the Planck scale to the ElectroWeak scale
    • Place of Presentation
      Paris, France.
    • Year and Date
      20060529-0602
  • [Presentation] Mass Varying Neutrinos in SUSY2006

    • Author(s)
      Morimitsu Tanimoto
    • Organizer
      Neutrino Oscillation in Venice Feb.
    • Place of Presentation
      Venice, Italy
    • Year and Date
      20060207-10
  • [Book] 新潟で探るニュートリノの不思議な世界2006

    • Author(s)
      谷本盛光, 田村詔生
    • Total Pages
      1-70
    • Publisher
      新潟大学ブックレット, 新潟大学大学院自然科学研究科
  • [Remarks] 谷本盛光「ニュートリノは宇宙の果てまで」,特集 : 素粒子像の探求, 数理科学、サイエンス社(2006) 12 月号, 31-36.

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Published: 2010-06-10   Modified: 2016-04-21  

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