Nucleon-nucleon interaction in a chiral SU(3) quark model revisited

TL;DR

This paper revisits the nucleon-nucleon interaction using a chiral SU(3) quark model with meson exchanges, achieving good agreement with experimental data on baryon masses, deuteron binding energy, and scattering phase shifts.

Contribution

It introduces a revised dynamical approach incorporating chiral symmetry breaking and strict wave function minimization in the quark model for NN interactions.

Findings

Accurate baryon mass calculations

Deuteron binding energy consistent with experiments

NN scattering phase shifts match observed data

Abstract

A dynamical investigation of the nucleon-nucleon (NN) interaction by using the resonating group method (RGM) in a chiral SU(3) quark model has been revisited. The considered quark-quark interaction includes, besides the one-gluon exchange (OGE) and the phenomenological confinement potential, the nonet scalar and pseudoscalar meson exchanges derived from the spontaneous SU(3) chiral symmetry breaking. The physical consistency requirement that the wave functions of single baryons satisfy the minimums of the Hamiltonian has been strictly imposed in determination of the model parameters. The calculated masses of the octet and decuplet baryon ground states, the binding energy of the deuteron, and the NN scattering phase shifts up to a total angular momentum J=6 are in satisfactory agreement with the experiments.