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题名: Understanding for flavor physics in the lepton sector
作者: Zhao, ZH
刊名: PHYSICAL REVIEW D
出版日期: 2012
卷号: 86, 期号:9, 页码:96010
关键词: MODEL ;  MASS ;  NEUTRINOS
学科分类: Physics
通讯作者: Zhao, ZH (reprint author), Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100190, Peoples R China.
部门归属: [Zhao, Zhen-hua] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China; [Zhao, Zhen-hua] State Key Lab Theoret Phys, Beijing 100190, Peoples R China
英文摘要: In this paper, we give a model for understanding flavor physics in the lepton sector mass hierarchy among different generations and neutrino mixing patterns. The model is constructed in the framework of supersymmetry, with a family symmetry S4 * U(1). There are two right-handed neutrinos introduced for a seesaw mechanism, while some standard model gauge group singlet fields are included, which transforms nontrivially under family symmetry. In the model, each order of contributions are suppressed by delta similar to 0.1 compared to the previous one. In order to reproduce the mass hierarchy, m(tau) and root Delta m(atm)(2), and m(mu) and root Delta m(sol)(2) are obtained at leading order and next-to-leading order, respectively, while the electron can only get its mass through next-to-next-to-next-to-leading order contributions. For neutrino mixing angels, theta(12), theta(23), theta(13) are 45 degrees, 45 degrees, 0, i.e., the bimaximal mixing pattern as a first approximation, while higher order contributions can make them consistent with experimental results. As corrections for theta(12) and theta(13) originate from the same contribution, there is a relation predicted for them: sin theta(13) 1-tan theta(12)/1+tan theta(12). Besides, the deviation from pi/4 for theta(23) should have been as large as the deviation from 0 for theta(13;) if not, the former is suppressed by a factor of 4 compared to the latter.
资助者: National Natural Science Foundation of China [11075193, 10821504]; National Basic Research Program of China [2010CB833000]
收录类别: SCI
原文出处: 查看原文
语种: 英语
WOS记录号: WOS:000311538000008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14979
Appears in Collections:理论物理所2012年知识产出_期刊论文

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Recommended Citation:
Zhao, ZH. Understanding for flavor physics in the lepton sector[J]. PHYSICAL REVIEW D,2012,86(9):96010.
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