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题名: Supersyrnmetry for fermion masses
作者: Liu Chun
刊名: COMMUNICATIONS IN THEORETICAL PHYSICS
出版日期: 2007
卷号: 47, 期号:6, 页码:1088-1098
关键词: R-PARITY VIOLATION ;  SUPERSYMMETRIC STANDARD MODEL ;  SOFTLY BROKEN SUPERSYMMETRY ;  LOW-ENERGY SUPERSYMMETRY ;  SPLIT SUPERSYMMETRY ;  GRAND UNIFICATION ;  LEPTON-NUMBER ;  CP-VIOLATION ;  COUPLING-CONSTANTS ;  SYMMETRY-BREAKING
学科分类: Physics
通讯作者: Liu, C , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: It is proposed that supersymmetry (SUSY) may be used to understand fermion mass hierarchies. A family symmetry Z(3L) is introduced, which is the cyclic symmetry among the three generation SU(2) doublets. SUSY breaks at a high energy scale similar to 10(11) GeV. The electroweak energy scale similar to 100 GeV is unnaturally small. No additional global symmetry, like the R-parity, is imposed. The Yukawa couplings and R-parity violating couplings all take their natural values, which are O(10(0) similar to 10(-2)). Under the family symmetry, only the third generation charged fermions get their masses. This family symmetry is broken in the soft SUSY breaking terms, which result in a hierarchical pattern of the fermion masses. It turns out that for the charged leptons, the tau mass is from the Higgs vacuum expectation value (VEV) and the sneutrino VEVs, the muon mass is due to the sneutrino VEVs, and the electron gains its mass due to both Z(3L) and SUSY breaking. The large neutrino mixing are produced with neutralinos playing the partial role of right-handed neutrinos. vertical bar V-e3 vertical bar, which is for v.-v, mixing, is expected to be about 0.1. For the quarks, the third generation masses ate from the Higgs VEVs, the second generation masses are from quantum corrections, and the down quark mass due to the sneutrino VEVs. It explains m(c)/m(s), m(s)/(me), m(d) > m(u), and so on. Other aspects of the model are discussed.
收录类别: SCI
WOS记录号: WOS:000247224100025
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5715
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Liu Chun. Supersyrnmetry for fermion masses[J]. COMMUNICATIONS IN THEORETICAL PHYSICS,2007,47(6):1088-1098.
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