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Jiang, Jing; Li, Tianjun; Nanopoulos, Dimitri V.; Li, TJ , Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
Testable flipped SU(5) x U(1)(X) models
Source PublicationNUCLEAR PHYSICS B
KeywordGauge-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
AbstractThe 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.
2007
ISSN0550-3213
Volume772Issue:40910Pages:49-66
Subject AreaPhysics
Indexed BySCI
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Cited Times:45[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5717
Collection理论物理所科研产出_SCI论文
Corresponding AuthorLi, TJ , Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA
Recommended Citation
GB/T 7714
Jiang, Jing,Li, Tianjun,Nanopoulos, Dimitri V.,et al. Testable flipped SU(5) x U(1)(X) models[J]. NUCLEAR PHYSICS B,2007,772(40910):49-66.
APA Jiang, Jing,Li, Tianjun,Nanopoulos, Dimitri V.,&Li, TJ , Texas A&M Univ, George P & Cynthia W Mitchell Inst Fundamental Ph, College Stn, TX 77843 USA.(2007).Testable flipped SU(5) x U(1)(X) models.NUCLEAR PHYSICS B,772(40910),49-66.
MLA Jiang, Jing,et al."Testable flipped SU(5) x U(1)(X) models".NUCLEAR PHYSICS B 772.40910(2007):49-66.
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