Barnard, Etienne2014-12-042014-12-042014-12-04http://hdl.handle.net/10539/15906A Dissertation Submitted to the Faculty of Science University of the Witwatersrand, Johannesburg for the Degree of Master of Science. Johannesburg 1985The success of bag models In hadron physics seems to imply that such models should be taken seriously as an approximation to QCD. In this belief a two-centre harmonic oscillator " bag " is utilised to describe kaon-proton scattering. An adiabatic approximation of the resulting system leads to a coupled channels formulation of the scattering problem . Because of Its complexity a solution of the gluon coupling inside a double-centred bag was not attempted; this turns out to be the most important interaction term and is simply parametrised. Even though all potentials are approximated by square wells and a variety of other approximations are made, a fair fit to the experimental phase shift data is obtained. It seems that the " bare " masses of the unstable baryons differ appreciably from positions of the experimental resonances .enNucleon-nucleon scatteringThesis