Broken S-3 flavor symmetry of leptons and quarks: Mass spectra and flavor mixing patterns
文献类型：期刊论文
| 作者 | Xing ZZ(邢志忠) ; Xing, ZZ; Yang, DS; Zhou, S
|
| 刊名 | PHYSICS LETTERS B
 |
| 出版日期 | 2010 |
| 卷号 | 690期号:3页码:304-310 |
| 关键词 | Flavor symmetry Fermion masses Flavor mixing |
| 通讯作者 | [Zhou, Shun] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany ; [Xing, Zhi-zhong] Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China ; [Yang, Deshan] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China |
| 英文摘要 | We apply the discrete S-3 flavor symmetry to both lepton and quark sectors of the Standard Model extended by introducing one Higgs triplet and realizing the type-II seesaw mechanism for finite neutrino masses. The resultant mass matrices of charged leptons (M-l), neutrinos (M-v), up-type quarks (M-u) and down-type quarks (M-d) have a universal form consisting of two terms: one is proportional to the identity matrix 1 and the other is proportional to the democracy matrix D. We argue that the textures of M-l, M-u and Md are dominated by the D term, while that of M is dominated by the I term. This hypothesis implies a near mass degeneracy of three neutrinos and can naturally explain why the mass matrices of charged fermions are strongly hierarchical, why the quark mixing matrix is close to I and why the lepton mixing matrix contains two large angles. We discuss a rather simple perturbation ansatz to break the S-3 symmetry and obtain more realistic mass spectra of leptons and quarks as well as their flavor mixing patterns. We stress that the I term, which used to be ignored from M-l, M-u and M-d, is actually important because it can significantly modify the smallest lepton flavor mixing angle theta(13) or three quark flavor mixing angles. (c) 2010 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 研究领域[WOS] | Physics |
| 原文出处 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000279388800017 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/236881]  |
| 专题 | 高能物理研究所_理论物理室 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | Xing ZZ,Xing, ZZ,Yang, DS,et al. Broken S-3 flavor symmetry of leptons and quarks: Mass spectra and flavor mixing patterns[J]. PHYSICS LETTERS B,2010,690(3):304-310. |
| APA | 邢志忠,Xing, ZZ,Yang, DS,&Zhou, S.(2010).Broken S-3 flavor symmetry of leptons and quarks: Mass spectra and flavor mixing patterns.PHYSICS LETTERS B,690(3),304-310. |
| MLA | 邢志忠,et al."Broken S-3 flavor symmetry of leptons and quarks: Mass spectra and flavor mixing patterns".PHYSICS LETTERS B 690.3(2010):304-310. |
入库方式： OAI收割
来源：高能物理研究所
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