SU(3)味对称性破缺对中微子质量和混合角的研究
发布时间:2021-06-23 13:44
论文首先回顾了中微子物理发展的历史,详细地综述了中微子的基本性质以及几十年来科研工作者取得的成就。重点介绍中微子振荡观测方面的四个来源,大气中微子振荡,太阳中微子振荡,加速器中微子振荡和反应堆中微子振荡。然后给出中微子振荡的唯象描述,并可以从中能得到的结论:中微子有质量和中微子之间存在混合。然后介绍狄拉克型中微子和马约拉纳型中微子,给出目前最为令人信服的中微子获得质量的机制,即跷跷板机制。接下来详细讨论SUF(3)味对称性和它的破缺,介绍了工作的思想来源,以及在解释中微子质量和混合角方面具体的工作,利用SU(3)群的生成元,引入8个参数构造一个矩阵,通过矩阵的对角化,并和实验数据比对,给出对参数的限制。最后我们简要介绍目前中微子方面存在其他的一些理论。
【文章来源】:北京工业大学北京市 211工程院校
【文章页数】:46 页
【学位级别】:硕士
【文章目录】:
摘要
Abstract
1 Introduction and movtivation
1.1 The establishment of the concept of“neutrino”
1.2 The importance of study on neutrinos
1.3 The discovery of neutrinos and development in following era
1.4 Motivation
2 The Oscillation of Neutrinos
2.1 The Evidences of the Neutrino Oscillation
2.1.1 Atmospheric Neutrino Oscillations
2.1.2 Solar neutrino oscillation
2.1.3 Accelerator neutrinos oscillation
2.1.4 Reactor neutrino oscillation
2.1.5 Implications of the experimental data
2.2 Theoretical discription of neutrino oscillation
2.2.1 Interaction of neutrinos within the SM
2.2.2 Neutrinos oscillation in the vacuum
2.2.3 Neutrinos oscillation in the matter
2.3 The mass of neutrinos and seesaw mechanism
2.3.1 Seesaw mechanism
2.3.2 Type-Ⅰ seesaw mechanism
2.3.3 Type-Ⅱ seesaw mechanism
2.3.4 Type-Ⅲ seesaw mechanism
2.4 Dirac neutrino and Majorana neutrino
2.4.1 Dirac neutrino
2.4.2 Majorana neutrino
3 The SUF(3) family gauge theory
3.1 The symmetry breaking along the direction of diagonal elements
3.2 The breaking symmetry along the direction of nondiagonal elements
3.3 The symmetry breaking with all generators
Conclusion
References
The achievement in the period of master degree
Acknowledgement
本文编号:3245044
【文章来源】:北京工业大学北京市 211工程院校
【文章页数】:46 页
【学位级别】:硕士
【文章目录】:
摘要
Abstract
1 Introduction and movtivation
1.1 The establishment of the concept of“neutrino”
1.2 The importance of study on neutrinos
1.3 The discovery of neutrinos and development in following era
1.4 Motivation
2 The Oscillation of Neutrinos
2.1 The Evidences of the Neutrino Oscillation
2.1.1 Atmospheric Neutrino Oscillations
2.1.2 Solar neutrino oscillation
2.1.3 Accelerator neutrinos oscillation
2.1.4 Reactor neutrino oscillation
2.1.5 Implications of the experimental data
2.2 Theoretical discription of neutrino oscillation
2.2.1 Interaction of neutrinos within the SM
2.2.2 Neutrinos oscillation in the vacuum
2.2.3 Neutrinos oscillation in the matter
2.3 The mass of neutrinos and seesaw mechanism
2.3.1 Seesaw mechanism
2.3.2 Type-Ⅰ seesaw mechanism
2.3.3 Type-Ⅱ seesaw mechanism
2.3.4 Type-Ⅲ seesaw mechanism
2.4 Dirac neutrino and Majorana neutrino
2.4.1 Dirac neutrino
2.4.2 Majorana neutrino
3 The SUF(3) family gauge theory
3.1 The symmetry breaking along the direction of diagonal elements
3.2 The breaking symmetry along the direction of nondiagonal elements
3.3 The symmetry breaking with all generators
Conclusion
References
The achievement in the period of master degree
Acknowledgement
本文编号:3245044
本文链接:https://www.wllwen.com/kejilunwen/wulilw/3245044.html