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Investigation of the neutrino masses and mixings based on a unified model of quarks and leptons

Research Project

Project/Area Number 08640386
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 素粒子・核・宇宙線
Research InstitutionUniversity of Shizuoka

Principal Investigator

KOIDE Yoshio  University of Shizuoka, School of Admin-istration and Informatics, Professor, 経営情報学部, 教授 (40046206)

Co-Investigator(Kenkyū-buntansha) FUSAOKA Hideo  Aichi Medical University, Faculty of Medicine, Associate Professor, 医学部, 助教授 (40097803)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 1998: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥700,000 (Direct Cost: ¥700,000)
Keywordsneutrino / quark / mass matrix / unification model / neutrino mixing / family mixing / CKM matrix
Research Abstract

The results of the present research project are classified by the following three categories.
1. Investigation on the universal seesaw model (USM) :
(1) We have found that the USM can reply the question of why only top quark aquires the mass m_t of the order of the electroweak scale A_L : Z.Phys.C71, (1996).
(2) We hae obtained the analytical expressions of the democratic seesaw mass matrix model : Prog, Theor, Phys.97, (1997).
(3) We have found the abnormal structure of the right-handed weak currents in the new USM : Phys.Rev.D56, (1997).
(4) We have investigated the evolution of the gauge and Yukawa coupling constants in the USM : Phys.Rev.D58, (1998).
2. Neutrino phenomenology and quark and lepton unification models
We have proposed the following three models for the neutrino mass matrix : Phys.Rev.D57, (1998) ; Mod.Phys.Lett.All, (1996) ; Phys.Rev.D59, (1999). However, we still need further investigations of the models.
3. Related topics of the mass matrix theories.
(1) We have given the updated estimates of the running quark masses systematically : Phys.Rev.D57, (1998).
(2) We have proposed an S_3 Higgs model which gives a possible explanation of a charged lepton mass relation : Z.Phys.072, (1996).
(3) We have pointed out the inportance of the rephasing in the CKM matrix by demonstrating it for the case of the NNI mass matrix : Mod.Phys.A12, (1997).

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (38 results)

All Other

All Publications (38 results)

  • [Publications] Y.Koide H.Fusaoka: "Top-quark-mass enhancement in a seesaw-type mass matrix" Zeitschrift fur Physik C. 71・3. 459-467 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide T.Tanimoto: "U(3)-family nonet Higgs boson and its phenomenology" Zeitschrift fur Physik C. 72・2. 333-344 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Neutrino mixing in a democratic seesaw mass matrix model" Modern Physics Letters A. 11・36. 2849-2859 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide H.Fusaoka: "Analytical expressions of masses and mixings in a democratic seesaw mass matrix model" Progress of Theoretical Physics. 97・3. 459-477 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Abnormal structure of fermion mixings in a seesaw quark mass matrix model" Physical Review D. 56・5. 2656-2664 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "NNI-form quark mass matrix expressed by the observable quantities" Modern Physics Letters A. 12・35. 2655-2664 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Updated estimate of running quark masses" Physical Review D. 57・7. 3986-4001 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Neutrino masses and mixings in a universal seesaw mass matrix model" Physical Review D. 57・9. 5836-5843 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Coupling constant evolution in an universal seesaw mass matrix model" Physical Review D. 58・5. 053008-1-053008-6 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide H.Fusaoka: "Universal seesaw mass matrix model with three light pseudo-Dirac neutrinos" Physical Review D. 59・5. 053004-1-053004-8 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Universal seesaw mass matrix model and SO(10)×SO(10) unification" European Physical Journal C. (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Masses and mixings of quarks and leptons" World Scientific Publishing Co Pte Ltd, 440 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide and H.Fusaoka: "Top-quark-mass enhancement in a seesaw-type mass matrix" Zeitschrift fur Physik C. vol.71, NO.3. 459-467 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide and T.Tanimoto: "U(3)-family nonet Higgs boson and its phenomenology" Zeitschrift fur Physik C. vol.72, No.2. 333-344 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "Neutrino mixing in a democratic seesaw mass matrix model" Modern Physics Letters A. vol.11, No.36. 2849-2859 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide and H.Fusaoka: "Analytical expressions of masses and mixings in a democratic seesaw mass matrix model" Progress of Theoretical Physics. vol.97, No.3. 459-477 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "Abnormal structure of fermion mixings in a seesaw quark mass matrix model" Physical Review D. vol.56, No.5. 2656-2664 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "NNI-form quark mass matrix expressed by the observable quantities" Modern Physics Letters A. vol.12, No.35. 2655-2664 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "Updated estimate of running quark masses" Physical Review D. vol.57, No.7. 3986-4001 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "Neutrino masses and mixings in a universal seesaw mass matrix model" Physical Review D. nol.57, No.9. 5836-5843 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "Coupling constant evolution in an universal seesaw mass matrix model" Physical Review D. vol.58, No.5. 053008-1-053008-6 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide and H.Fusaoka: "Universal seesaw mass matrix model with three light pseudo-Dirac neutrinos" Physical Review D. vol.59, No.5. 053004-1-053004-8 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Koide: "Universal seesaw mass matrix model and SO(10)*SO(10) unification" European Physical Jour-nal C. (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yoshio Koide: "Updated estimate of running quark masses" Physical Review D. 57・7. 3986-4001 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshio Koide: "Neutrino masses and mixings in a universal seesaw mass matrix model" Physical Review D. 57・9. 5836-5843 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshio Koide: "Coupling constant evolution in an universal seesaw mass matrix model" Physical Review D. 58・5. 053008-1-083008-6 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Koide H.Fusaoka: "Universal seesaw mass matrix model with three lightpseudeo-Dirac nertrinos" Physical Review D. 59・5. 053004-1-053004-8 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshio Koide: "Universal seesaw mass matrix model and SO(10)×SO(10) unification" European Physical Journal C. (1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshio Koide: "Masses and mixings of quarks and leptons" World Scientific Publishing Co Pte Ltd, 440 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Yoshio Koide: "Abnormal structure of fermion mixings in a seesaw quark mass matrix model" Physical Review D. 56・5. 2656-2664 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshio Koide: "NNI-form quark mass matrix expressed by the observable quantities" Modern Physics Letters A. 12・35. 2655-2664 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshio Koide: "Updated estimate of running quark masses" Physical Review D. 56・7. n-n+16 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshio Koide: "Neutrino masses and mixings in a universal seesaw mass matrix model" Physical Review D. 57・9. n-n+8 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshio Koide: "Masses and mixings of quarks and leptons" World Scientific Publishing Co Pte Ltd, 440 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Yoshio Koide: "Top-quark-mass enhancement in a seesaw-type mass matrix" Zeitschrift fur Physik C. 71・3. 459-467 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yoshio Koide: "U (3) -family nonet Higgs boson and its phenomenology" Zeitschrift fur Physik C. 72・3. 333-344 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yoshio Koide: "Neutrino mixing in a democratic seesaw mass matrix model" Modern Physics Letters A. 11・36. 2849-2859 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Yoshio Koide: "Analytical expressions of masses and mixings in a democratic seesaw mass matrix model" Progress of Theoretical Physics. 97・3. (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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