Return to search

Electromagnetic production of mesons and hyperons from nuclei

Thesis (MSc (Physics))--University of Stellenbosch, 2007. / A relativistic plane wave model is developed for electromagnetic production of unbound
hyperons with free kaons from nuclei. The differential cross section is expressed as a
contraction of leptonic and hadronic tensors. The leptonic tensor is constructed by using
the helicity representation of a free Dirac spinor. A model for the corresponding elementary
process is used to calculate the hadronic tensor, in which the hadronic current operator
Jˆμ is written as a linear combination of six invariant amplitudes and six Lorentz and
gauge invariant quantities. The kinematics for this process is assumed to be a quasi-free
process i.e., the electron interacts with only one bound nucleon inside the nucleus. The
bound state wavefunction of the bound nucleon is calculated within the framework of the
relativistic mean-field approximation. The unpolarized differential cross section for the K+
electroproduction process, e + A −→ e + K+ + A + Aresidual is calculated as a function of
the hyperon scattering angle.

Identiferoai:union.ndltd.org:netd.ac.za/oai:union.ndltd.org:sun/oai:scholar.sun.ac.za:10019.1/2115
Date12 1900
CreatorsNsio Nzundu, Tony
ContributorsVan der Ventel, B. I. S., Hillhouse, G. C., University of Stellenbosch. Faculty of Science. Dept. of Physics.
PublisherStellenbosch : University of Stellenbosch
Source SetsSouth African National ETD Portal
LanguageEnglish
Detected LanguageEnglish
TypeThesis
RightsUniversity of Stellenbosch

Page generated in 0.0016 seconds