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题名: Testable flipped SU(5) x U(1)(X) models
作者: Jiang, Jing ;  Li, Tianjun ;  Nanopoulos, Dimitri V.
刊名: NUCLEAR PHYSICS B
出版日期: 2007
卷号: 772, 期号:40910, 页码:49-66
关键词: GAUGE-COUPLING UNIFICATION ;  RENORMALIZATION-GROUP EQUATIONS ;  QUANTUM-FIELD THEORY ;  FERMIONIC STRING FORMULATION ;  SCALE SUPERSYMMETRY BREAKING ;  STANDARD-LIKE MODEL ;  MODULI DEPENDENCE ;  SYMMETRY-BREAKING ;  YUKAWA COUPLINGS ;  CP CONSERVATION
学科分类: Physics
通讯作者: Li, TJ , Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
部门归属: Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA; Univ Oregon, Inst Theoret Sci, Eugene, OR 97403 USA; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA; Houston Adv Res Ctr, Astroparticle Phys Grp, The Woodlands, TX 77381 USA; Acad Athens, Div Nat Sci, Athens 10679, Greece
英文摘要: The little hierarchy between the GUT scale and the string scale may give us some hints that can be tested at the LHC. To achieve string-scale gauge coupling unification, we introduce additional vector-like particles. We require that these vector-like particles be standard, form complete GUT multiplets, and have masses around the TeV scale or close to the string scale. Interestingly, only the flipped SU(5) x U(1)(X) models can work elegantly. We consider all possible sets of vector-like particles with masses around the TeV scale. And we introduce vector-like particles with masses close to the string scale which can mimic the string-scale threshold corrections. We emphasize that all of these vector-like particles can be obtained in the interesting flipped SU(5) x U(1)(X) string models from the four-dimensional free fermionic string construction. Assuming the low-energy supersymmetry, high-scale supersymmetry, and split supersymmetry, we show that the string-scale gauge coupling unification can indeed be achieved in the flipped SU(5) x U(1)(X) models. These models can be tested at the LHC by observing simple sets of vector-like particles at the TeV scale. Moreover, we discuss a simple flipped SU(5) x U(1)(X) model with string-scale gauge coupling unification and high-scale supersymmetry by introducing only one pair of the vector-like particles at the TeV scale, and we predict the corresponding Higgs boson masses. Also, we briefly comment on the string-scale gauge coupling unification in the model with low-energy supersymmetry by introducing only one pair of the vector-like particles at the intermediate scale. And we briefly comment on the mixings among the SM fermions and the corresponding extra vector-like particles. (c) 2007 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000246921900003
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5717
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:
Jiang, Jing,Li, Tianjun,Nanopoulos, Dimitri V.. Testable flipped SU(5) x U(1)(X) models[J]. NUCLEAR PHYSICS B,2007,772(40910):49-66.
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