Charge and isospin symmetry breaking via external pi(0)-eta meson mixing

摘要

A simple model of isospin and charge symmetry breaking due to external pi(0)-eta meson mixing is presented. It is based on amplitudes extracted from the available experimental data for pd --> He-3 pi(0), pd --> He-3 eta and dd --> He-4 eta reactions. Predictions of the strength of isospin symmetry breaking in pd --> H-3 pi(+)/He-3 pi(0) reactions are given. Within the same model, the cross section for the charge symmetry breaking dd --> He-4 pi(0) reaction is calculated. (C) 2000 Elsevier Science B.V. All rights reserved. [References: 39]