論文首先回顧了中微子物理發(fā)展的歷史,詳細(xì)地綜述了中微子的基本性質(zhì)以及幾十年來科研工作者取得的成就。重點(diǎn)介紹中微子振蕩觀測方面的四個(gè)來源,大氣中微子振蕩,太陽中微子振蕩,加速器中微子振蕩和反應(yīng)堆中微子振蕩。然后給出中微子振蕩的唯象描述,并可以從中能得到的結(jié)論:中微子有質(zhì)量和中微子之間存在混合。然后介紹狄拉克型中微子和馬約拉納型中微子,給出目前最為令人信服的中微子獲得質(zhì)量的機(jī)制,即蹺蹺板機(jī)制。接下來詳細(xì)討論SU_F（3）味對稱性和它的破缺,介紹了工作的思想來源,以及在解釋中微子質(zhì)量和混合角方面具體的工作,利用SU（3）群的生成元,引入8個(gè)參數(shù)構(gòu)造一個(gè)矩陣,通過矩陣的對角化,并和實(shí)驗(yàn)數(shù)據(jù)比對,給出對參數(shù)的限制。最后我們簡要介紹目前中微子方面存在其他的一些理論。 

【文章來源】：北京工業(yè)大學(xué)北京市 211工程院校

【文章頁數(shù)】：46 頁

【學(xué)位級別】：碩士

【文章目錄】：
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



本文編號：3245044