Possible SU(4)/sub c/ x SU(3)/sub f/ x U(1) model
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:
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
- DOE Contract Number:
- DE-AC03-76SF00515
- OSTI ID:
- 6381642
- Journal Information:
- Phys. Rev. D; (United States), Vol. 23:11
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
WEINBERG-SALAM GAUGE MODEL
LEPTONS
QUARKS
CABIBBO ANGLE
COUPLING CONSTANTS
QUANTUM CHROMODYNAMICS
QUANTUM NUMBERS
SU-3 GROUPS
SU-4 GROUPS
SYMMETRY BREAKING
U-1 GROUPS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
LIE GROUPS
MATHEMATICAL MODELS
PARTICLE MODELS
POSTULATED PARTICLES
QUANTUM FIELD THEORY
SU GROUPS
SYMMETRY GROUPS
U GROUPS
UNIFIED GAUGE MODELS
645400* - High Energy Physics- Field Theory
645201 - High Energy Physics- Particle Interactions & Properties-Theoretical- General & Scattering Theory