Possible SU(4)/sub c/ x SU(3)/sub f/ x U(1) model

Journal Article · Mon Jun 01 04:00:00 EDT 1981 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.23.2690· OSTI ID:6381642

Gao, C; Chou, K

An anomaly-free model of strong and electroweak interactions involving leptons and quarks in the SU(4)/sub c/ x SU(3)/sub f/ x U(1) gauge theory is constructed. After spontaneous symmetry breaking, it reduces to quantum chromodynamics for strong interactions and a broken SU(3) x U(1) model for electroweak interactions. As a limiting case it gives the same results as those of the Weinberg-Salam model in the low-energy region. The Weinberg angle is bounded by sin/sup 2/theta/sub W/<1/4 and becomes slightly less than 30/sup 0/ in the limiting case. Below the mass scale of SU(4)/sub c/ breaking there exists an inequality between the Weinberg angle and the strong coupling constant, which is consistent with experiments. A correction to the neutral current of the Weinberg-Salam model is suggested. A new conserved quantum number is introduced in this model and there exist several new fermions with masses lighter than 160 GeV. The Kobayashi-Maskawa expression of Cabibbo mixing for quarks may be obtained in the model, generalized to include several generations of fermions.

• Research Organization: Stanford Linear Accelerator Center, Stanford University, Stanford, California 94305
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6381642
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 23:11; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645201 -- High Energy Physics-- Particle Interactions &amp; Properties-Theoretical-- General &amp; Scattering Theory
645400* -- High Energy Physics-- Field Theory
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
CABIBBO ANGLE
COUPLING CONSTANTS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
LEPTONS
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUANTUM NUMBERS
QUARKS
SU GROUPS
SU-3 GROUPS
SU-4 GROUPS
SYMMETRY BREAKING
SYMMETRY GROUPS
U GROUPS
U-1 GROUPS
UNIFIED GAUGE MODELS
WEINBERG-SALAM GAUGE MODEL