Gauge theory with calculable neutron-proton-quark mass difference
A gauge theory of weak and electromagnetic interactions is presented, in which the neutron-proton-quark mass difference is finite and calculable. The model is a generalization to include strange particles of an SU(2)/subL/ x SU(2)/ subR/ x U(1) model suggested by Weinberg; neutral strangeness-changing processes are suppressed using the Glashow-Iliopoulos-Maiani mechanism, which introduces a fourth ''charmed'' quark P', in addition to the usual P, N, lambda. Universality of semileptonic and leptonic weak interactions can easily, though not naturally, be achieved, and the model has the interesting prediction that the effective hadronic neutral current is purely vector. By imposing an additional discrete symmetry, a solution is obtained in which weak universality is natural, and the neutron-quark and proton-quark masses vanish in zero order.
- Research Organization:
- Department of Physics, University of Pennsylvania, Philadelphia, Pennsylvania 19174
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-33-024514
- OSTI ID:
- 4041072
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 12 Vol. 12; ISSN PRVDAQ; ISSN 0556-2821
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
*UNIFIED GAUGE MODELS-- WEAK INTERACTIONS
641102*
CHARM PARTICLES
N64220* --Physics (High Energy)--Particle Interactions & Properties (Theoretical)--Electromagnetic
N64230 --Physics (High Energy)--Particle Interactions & Properties (Theoretical)--Weak
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