Short-range repulsion and isospin dependence in the KN system
Nuclear Theory
2009-11-07 v1
Abstract
The short-range properties of the KN interaction are studied within the meson-exchange model of the Juelich group. Specifically, dynamical explanations for the phenomenological short-range repulsion, required in this model for achieving agreement with the empirical KN data, are explored. Evidence is found that contributions from the exchange of a heavy scalar-isovector meson (a_0(980)) as well as from genuine quark-gluon exchange processes are needed. Taking both mechanisms into account a satisfactory description of the KN phase shifts can be obtained without resorting to phenomenological pieces.
Keywords
Cite
@article{arxiv.nucl-th/0209026,
title = {Short-range repulsion and isospin dependence in the KN system},
author = {D. Hadjimichef and J. Haidenbauer and G. Krein},
journal= {arXiv preprint arXiv:nucl-th/0209026},
year = {2009}
}
Comments
26 pages, 5 figures