Interplay of quark and meson degrees of freedom in some models of hadrons
Various baryon and meson models are considered. An approximate method of boosting the bag is extended to the pion-surrounded nucleon bag and developed for the calculation of low-energy nucleon form factors. The method is useful for the computation of the induced pseudoscalar form factor where both the inclusion of the pion field and the non-vanishing momentum transfer are necessary. In 1 + 1 dimension, with the help of the cell model of the vacuum state, they construct a topological bag which interpolates continuously between a two-phase model and a Sine-Gordon soliton. The cell picture of the vacuum state is used in 3 + 1 dimension to construct a model for pions and kaons as Goldstone bosons of spontaneously broken chiral symmetry. The model is extended to incorporate massive quarks. The quark mass dependence of and f/sub K/ is calculated without resorting to chiral perturbation theory. A topological chiral two-phase baryon model with omega-meson stabilizing term is studied and compared with a closely related model where the omega-meson has been eliminated in the limit of infinite mass and coupling constant.
- Research Organization:
- State Univ. of New York, Stony Brook (USA)
- OSTI ID:
- 6404004
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
Similar Records
Two-phase model and the Johnson vacuum in one dimension
Chiral pion dynamics for spherical bags
Related Subjects
BARYONS
PARTICLE MODELS
MESONS
BAG MODEL
CHIRAL SYMMETRY
COUPLING CONSTANTS
FORM FACTORS
GOLDSTONE BOSONS
KAONS
MASS
PIONS
QUARKS
SOLITONS
SYMMETRY BREAKING
TOPOLOGY
VACUUM STATES
BOSONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
HADRONS
MATHEMATICAL MODELS
MATHEMATICS
PARTICLE PROPERTIES
POSTULATED PARTICLES
PSEUDOSCALAR MESONS
QUARK MODEL
QUASI PARTICLES
STRANGE MESONS
STRANGE PARTICLES
SYMMETRY
645201* - High Energy Physics- Particle Interactions & Properties-Theoretical- General & Scattering Theory