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题名: SU(5) and SO(10) models from F-theory with natural Yukawa couplings
作者: Li, Tianjun
刊名: PHYSICAL REVIEW D
出版日期: 2010
卷号: 81, 期号:6, 页码:-
关键词: NEUTRINO-MASS
学科分类: Physics
通讯作者: Li, TJ , Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China
部门归属: [Li, TJ] Chinese Acad Sci, Inst Theoret Phys, Key Lab Frontiers Theoret Phys, Beijing 100190, Peoples R China; [Li, TJ] Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
英文摘要: We construct the SU(5) and SO(10) models from F-theory. Turning on the U(1) fluxes, we can break the SU(5) gauge symmetry down to the standard model (SM) gauge symmetry, and break the SO(10) gauge symmetry down to the SU(3)(C) x SU(2)(L) x SU(2)(R) x U(1)(B-L) gauge symmetry. In particular, all the SM fermion Yukawa couplings preserve the enhanced U(1)(a) x U(1)(b) gauge or global symmetries at the triple intersections of the SM fermion and Higgs curves. And the SM fermion masses and mixings can be generated in the presence of background fluxes. In our models, the doublet-triplet splitting problem can be solved naturally. The additional vectorlike particles can obtain heavy masses via the instanton effects or Higgs mechanism and then decouple at the high scale. The SM gauge couplings at the string scale, which are split due to the U(1) flux effects, can be explained by considering heavy threshold corrections from the extra vectorlike particles. Moreover, in the SU(5) model, we have the Yukawa coupling unification for the bottom quark and tau lepton. In the SO(10) models, we have the Yukawa coupling unification for the top and bottom quarks, and the Yukawa coupling unification for the tau lepton and tau neutrino.
资助者: Natural Science Foundation of China[10821504]
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000276195700101
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5149
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Li, Tianjun. SU(5) and SO(10) models from F-theory with natural Yukawa couplings[J]. PHYSICAL REVIEW D,2010,81(6):-.
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