Hypernuclear formation through kaon electromagnetic production

Thesis/Dissertation · Wed Jan 01 04:00:00 EST 1986

OSTI ID:7244173

Hsiao, S S

The formation and excitation of hyperon systems through kaon (K/sup +/ meson) photo and electroproduction (..gamma..,K/sup +/) and (e,e'K/sup +/) reactions, is theoretically investigated. The elementary kaon electroproduction process ep ..-->.. e'K/sup +/..lambda.. is described using the first order, one-photon exchange approximation and related to kaon virtual-photoproduction through the polarization density matrix formalism. The reaction d(e,e'K/sup +/)..lambda..n is treated in the relativistic impulse approximation by combining the deuteron vertex function with a covariant description of the elementary process ep ..-->.. e'K/sup +/..lambda... A covariant factorization method is employed to reduce the formula to the nonrelativistic limit. The ingredients for describing the hypernuclear formation reactions A(e,e'K/sup +/)/sub ..lambda../B and A(..gamma..,K/sup +/)/sub ..lambda../B are the elementary one-body current operator and the nuclear shell model wave functions. The particle (lambda)-hold (proton) formalism is utilized for both Woods-Saxon and harmonic oscillator basis functions. The hypernuclear formation spectrum is calculated for light and heavy nuclear targets. Medium to high spin unnatural parity states are found to be preferentially excited and the optimum kinematics for extracting the longitudinal nuclear form factor are determined.

• Research Organization: North Carolina State Univ., Raleigh (USA)
• OSTI ID: 7244173
• Country of Publication: United States
• Language: English

Related Subjects

645202* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Electromagnetic Interactions & Properties
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
BASIC INTERACTIONS
BOSONS
CAPTURE
DIRECT REACTIONS
ELECTROMAGNETIC INTERACTIONS
ELECTROPRODUCTION
ELEMENTARY PARTICLES
FERMIONS
HADRONS
HEAVY NUCLEI
HYPERNUCLEI
HYPERONS
INTERACTIONS
KAONS
KAONS PLUS
LAMBDA BARYONS
LAMBDA PARTICLES
LIGHT NUCLEI
MESONS
NUCLEAR FRAGMENTS
NUCLEAR REACTIONS
NUCLEI
PARTICLE PRODUCTION
PHOTOPRODUCTION
PSEUDOSCALAR MESONS
QUASI-ELASTIC SCATTERING
QUASI-FREE REACTIONS
SCATTERING
STRANGE MESONS
STRANGE PARTICLES