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

基于夸克和轻子的统一模型研究中微子质量和混合

基本信息

批准号：
08640386
负责人：
KOIDE Yoshio
金额：
$ 1.22万
依托单位：
University of Shizuoka
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08640386/
关键词：
neutrino quark mass matrix unification model neutrino mixing family mixing CKM matrix

项目摘要

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 modelsWe 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).

本研究项目的成果分为以下三类1.(1)我们发现只有顶夸克才能获得电弱标度A_L：Z.Phys.C71，(1996)量级的质量m_t的问题。(2)我们得到了民主跷跷板质量矩阵模型的解析表达式：Prog，Theor，Phys.97，(1997)。(3)我们发现了新的USM中右手弱电流的反常结构：Phys.Rev.D56，(4)我们研究了USM中规范和汤川耦合常数的演化：物理修订版D58，(1998)2。中微子现象学与夸克和轻子统一模型我们提出了以下三种中微子质量矩阵模型：物理修订版D57，(1998)；物理修订版D59，(1999)。然而，我们还需要对这些模型进行进一步的研究。(1)系统地给出了流动夸克质量的最新估计：Phys.Rev.D57，(1998).(2)我们提出了一个可能解释带电轻子质量关系的S_3 Higgs模型：Z.Phys.072，(1996).(3)我们通过对NI质量矩阵：mod.Phys.A12，(1997)的验证，指出了CKM矩阵中重相的重要性.