Microscopic NN-π NN*(1440) transition potential: determination of πNN*(1440) and πNN*(1440) coupling constants

2002

A NN→NN∗(1440) transition potential, based on an effective quark-quark interaction and a constituent quark cluster model for baryons, is derived in the Born-Oppenheimer approach. The potential shows significant differences with respect to those obtained by a direct scaling of the nucleon-nucleon interaction. From its asymptotic behavior we extract the values of πNN∗(1440) and σNN∗(1440) coupling constants in a particular coupling scheme.