Quark delocalization, color screening model and nucleon-baryon scattering

We apply the quark delocalization and color screening model to nucleon-bary on scattering. A semi-quantitative fit to N-N, N-Lambda and N-Sigma phase s hifts and scattering cross sections is obtained without invoking meson exch ange. Quarks delocalize reasonably in all of the different flavor channels to induce effective nucleon-baryon interactions with both a repulsive core and with an intermediate range attraction in the cases expected. (C) 2000 E lsevier Science B.V. All rights reserved.