Topics of higher order electroweak processes and nonleptonic weak processes in standard model
This thesis is devoted to the calculation of higher order electroweak processes and nonleptonic weak interaction processes in the framework of the standard model. Primarily to standardize the notation, the thesis begins with a brief discussion of the Feynman rules and the dimensional regularization in a general renormalizable gauge for a spontaneously broken gauge theory. A typical process where higher order corrections are significant is the s ..-->.. d..gamma.. transition. Amplitude including QCD radiative corrections for this process is calculated using a free quark model, which is then used to compute hyperon weak radiative decays. Explicit evaluation of the transition amplitude of the ..sigma.. ..-->.. P..gamma.. mode is given. The quark fields are expanded in terms of MIT bag modes, so as to be consistent with quark confinement. The traditional baryon-pole model result is derived and some evidence for a (V + A) weak hadronic current is discovered. The thesis also contains a phenomenological Lagrangian model for charmed meson decays. The model consists of a SU/sub L/(3) x SU/sub R/(3) nonlinear chiral Lagrangian with gauge fields. The model gives a one-parameter prediction of all two body and three body decay data. The authors predict the life time ratio ..pi..(anti D)/..pi..(anti D/sup 0/) = 3.75 and branching ratio of anti D..pi.. decay modes, namely B/sub r/(anti D/sup 0/..-->..K/sup 0/..pi../sup 0/)/B/sub r/(D/sup 0/..-->..K-..pi..+) = 1.04. These are in good agreement with experimental results.
- Research Organization:
- Syracuse Univ., NY (USA)
- OSTI ID:
- 6297681
- Resource Relation:
- Other Information: Thesis (Ph. D.)
- Country of Publication:
- United States
- Language:
- English
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D-1865 RESONANCES
WEAK HADRONIC DECAY
D-2007 RESONANCES
ELECTROMAGNETIC INTERACTIONS
WEINBERG-SALAM GAUGE MODEL
HYPERONS
RADIATIVE DECAY
WEAK INTERACTIONS
BAG MODEL
BRANCHING RATIO
CHARM PARTICLES
PARTICLE WIDTHS
RADIATIVE CORRECTIONS
THEORETICAL DATA
WEAK CHARGED CURRENTS
ALGEBRAIC CURRENTS
BARYONS
BASIC INTERACTIONS
BOSONS
CHARGED CURRENTS
CHARMED MESON RESONANCES
COMPOSITE MODELS
CORRECTIONS
CURRENTS
D RESONANCES
DATA
DECAY
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
HADRONS
INFORMATION
INTERACTIONS
MATHEMATICAL MODELS
MESON RESONANCES
MESONS
NUMERICAL DATA
PARTICLE DECAY
PARTICLE MODELS
PARTICLE PROPERTIES
POSTULATED PARTICLES
QUARK MODEL
RESONANCE PARTICLES
STRANGE PARTICLES
UNIFIED GAUGE MODELS
UNIFIED-FIELD THEORIES
WEAK PARTICLE DECAY
645202* - High Energy Physics- Particle Interactions & Properties-Theoretical- Electromagnetic Interactions & Properties
645203 - High Energy Physics- Particle Interactions & Properties-Theoretical- Weak Interactions & Properties
645400 - High Energy Physics- Field Theory