arXiv:nucl-th/9703007·v1·Nuclear Theory
Repulsive Core of NN S-Wave Scattering in a Quark Model with a Condensed Vacuum
P. J. A. Bicudo🇵🇹 · L. S. Ferreira🇵🇹 · C.M. Plácido🇵🇹 · J. E. F. T. Ribeiro (Centro de Fisica das Interacoes fundamentais, Instituto Superior Tecnico, Lisboa)🇵🇹
Abstract
We work in a chiral invariant quark model, with a condensed vacuum, characterized by only one parameter. Bound state equations for the nucleon and Delta are solved in order to obtain an updated value of their radii and masses. Nucleon-nucleon S-Wave scattering is studied in the RGM framework both for isospin T=1 and T=0. The phase shifts are calculated and an equivalent local potential, which is consistent with K-N scattering, is derived. The result is a reasonable microscopic short range repulsion in the nucleon-nucleon interaction.
Comments: 23 pages in latex revtex, 4 Postscript figures