The NN-potential with forbidden state suggested from a six-quark model with one-pion exchange

Abstract

A new, realistic NN-potential is proposed which is suggested from a six-quark model with dominant quark configuration s 4p 2 and includes the one-pion exchange mechanism in the 1S 0 and coupled 3S 1 − 3D 1 channels. The potential is purely attractive on the mass shell and includes a deep-lying forbidden state instead of a repulsive core. A very small number of free parameters is sufficient to succesfully describe both the 3S 1 − 3D 1 NN-phase shifts, the mixing parameter ε and the singlet 1S 0 phase shifts in a broad energy range from 0 to 400 MeV (alongside with effective range parameters) and also basic deuteron parameters (i.e. binding energy, RMS charge radius, quadrupole moment, etc.). The deuteron wave function components ( u and w) have an inner node at the place of the hard core of the conventional realistic NN potentials.