Grand unified model with composite fermions

Journal Article · Thu Apr 01 04:00:00 EST 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.25.1910· OSTI ID:5433501

Xue, P

We propose a grand unified model with composite particles based on the SO(3) x SU(8) group. We assume that quarks and leptons are formed at a scale of about 10/sup 15/ GeV. The composite states are singlets of the metacolor group SO(3). We discuss nontrivial solutions to satisfy 't Hooft's constraint with most economic preons, i.e., the composite fermion states can be constructed out of only one or three preons. Thus we can provide a natural explanation for the occurrence of massless composite quarks and leptons in a strongly interacting gauge theory. This model can accommodate three generations of observed light composite quarks and leptons. We also discuss the breaking mechanism of the SU(8) group by Higgs bosons which also are constructed out of preon condensates. Choosing suitably Higgs-boson condensates, we can get some nice results which have been obtained in ordinary SU(8) grand unified models. Some open problems are noted.

• Research Organization: Center for Theoretical Physics, Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• OSTI ID: 5433501
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 25:7; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- General & Scattering Theory
645400 -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
COMPOSITE MODELS
COUPLING CONSTANTS
ELEMENTARY PARTICLES
FERMIONS
HIGGS BOSONS
INTERMEDIATE BOSONS
LEPTONS
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUARKS
SO GROUPS
SO-3 GROUPS
SU GROUPS
SU-8 GROUPS
SYMMETRY GROUPS
UNIFIED GAUGE MODELS