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Barger, V.; Jiang, Jing; Langacker, Paul; Li, Tianjun; Barger, V , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
String scale gauge coupling unification with vector-like exotics and noncanonical U(1)(Y) normalization
Source PublicationINTERNATIONAL JOURNAL OF MODERN PHYSICS A
KeywordStrong Cp Problem Standard Model Supersymmetry Breaking Particle Physics Constant Unification Moduli Dependence Grand Unification Gut Breaking Condensation Conservation
AbstractWe use a new approach to study string scale gauge coupling unification systematically, allowing both the possibility of noncanonical U(1)(Y) normalization and the existence of vector-like particles whose quantum numbers are the same as those of the Standard Model (SM) fermions and their Hermitian conjugates and the SM adjoint particles. We first give all the independent sets (Yi) of particles that can be employed to achieve SU(3)(C) and SU(2)(L) string scale gauge coupling unification and calculate their masses. Second, for a noncanonical U(1)(Y) normalization, we obtain string scale SU(3)(C) x SU(2)(L) x U(1)(Y) gauge coupling unification by choosing suitable U(1)(Y) normalizations for each of the Yi sets. Alternatively, for the canonical U(1)(Y) normalization, we achieve string scale gauge coupling unification by considering suitable combinations of the Yi sets or by introducing additional independent sets (Zi), that do not affect the SU(3)(C) x SU(2)(L) unification at tree level, and then choosing suitable combinations, one from the Yi sets and one from the Zi sets. We also briefly discuss string scale gauge coupling unification in models with higher Kac-Moody levels for SU(2)(L) or SU(3)(C).
2007
ISSN0217-751X
Volume22Issue:32Pages:6203-6218
Subject AreaPhysics
Indexed BySCI
Citation statistics
Cited Times:17[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/5615
Collection理论物理所科研产出_SCI论文
Corresponding AuthorBarger, V , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA
Recommended Citation
GB/T 7714
Barger, V.,Jiang, Jing,Langacker, Paul,et al. String scale gauge coupling unification with vector-like exotics and noncanonical U(1)(Y) normalization[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2007,22(32):6203-6218.
APA Barger, V.,Jiang, Jing,Langacker, Paul,Li, Tianjun,&Barger, V , Univ Wisconsin, Dept Phys, 1150 Univ Ave, Madison, WI 53706 USA.(2007).String scale gauge coupling unification with vector-like exotics and noncanonical U(1)(Y) normalization.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,22(32),6203-6218.
MLA Barger, V.,et al."String scale gauge coupling unification with vector-like exotics and noncanonical U(1)(Y) normalization".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 22.32(2007):6203-6218.
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