The nucleon-nucleon interaction in the quark model

Abstract

The nucleon-nucleon interaction is calculated starting from quarks and gluons and the interaction determined by QCD. The short range part is determined by quark and gluon exchange, while the long range part is calculated by allowing π and σ meson exchange between the quarks. The parameters of the model are adjusted to the nucleon mass, the Δ mass and the charge root mean square radius of the proton (including the pion cloud). The π and σ quark-quark coupling constants are adjusted to the known meson proton coupling. Using the resonating group method the 3S and 1S phase shifts are calculated in surprisingly good agreement with the data.