66 v 1 2 4 Fe b 19 99 Nucleon Resonance Effects in pp → ppπ 0 near Threshold


The role of the low lying nucleon resonances beyond the ∆(1232) in the reaction pp → ppπ 0 near threshold is shown to be numerically significant by a calculation, which takes into account the pion re-scattering contribution described by chiral perturbation theory and the short-range mechanisms that are implied by the nucleon-nucleon interaction model. The… (More)