Hadjimichef, D.Haidenbauer, J.Krein, G. [UNESP]2014-05-272014-05-272002-11-01Physical Review C - Nuclear Physics, v. 66, n. 5, p. 552141-5521411, 2002.0556-2813http://hdl.handle.net/11449/67007The 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.552141-5521411engArtigo10.1103/PhysRevC.66.055214WOS:000179760200055Acesso aberto2-s2.0-00368768242-s2.0-0036876824.pdf