Phys. Rev. C 66, 055214 (2002) [11 pages]Short-range repulsion and isospin dependence in the kaon-nucleon (KN) systemReceived 9 September 2002; published 27 November 2002 The short-range properties of the kaon-nucleon (KN) interaction are studied within the meson-exchange model of the Jülich 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 [a0(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. © 2002 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevC.66.055214
DOI:
10.1103/PhysRevC.66.055214
PACS:
13.75.Jz, 12.39.-x, 14.20.Jn, 21.30.-x
|
|
About | Terms and Conditions | Subscriptions | Search | Help
Use of the American Physical Society websites and journals implies that the user has read and agrees to our Terms and Conditions and any applicable Subscription Agreement. Physical Review®, Physical Review Letters®, Reviews of Modern Physics®, and Physical Review Special Topics® are trademarks of the American Physical Society.