A bag model for kaon-nucleon scattering
Date
2014-12-04
Authors
Barnard, Etienne
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
The 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 .
Description
A Dissertation Submitted to the
Faculty of Science
University of the Witwatersrand, Johannesburg
for the Degree of
Master of Science.
Johannesburg 1985