Influence of the N*(1440) and N*(1535) Resonances in Intermediate Energy pp and np Scattering

Pricking, A.; Elster, Ch.; Gardestig, A.; Hinterberger, F.; collaboration, the EDDA

Influence of the N(1440) and N(1535) Resonances in Intermediate Energy pp and np Scattering

Authors

collaboration, the EDDA

Description

Motivated by a recent measurement of proton-proton elastic scattering observables up to 3.0 GeV, we investigate the description of those data within models of the nucleon-nucleon (NN) interaction valid above the pion production threshold. In addition to including the well known Delta resonance we incorporate two low-lying N* resonances, the N*(1440) and the N*(1535), and study their influence on pp and np observables for projectile laboratory kinetic energies up to 1.5 GeV.
12 pages, 20 Figs