Charge and isospin symmetry breaking via external π0–η meson mixing Original Research Article

A simple model of isospin and charge symmetry breaking due to external π0–η meson mixing is presented. It is based on amplitudes extracted from the available experimental data for pd→3Heπ0, pd→3Heη and dd→4Heη reactions. Predictions of the strength of isospin symmetry breaking in pd→3Hπ+/3Heπ0 reactions are given. Within the same model, the cross section for the charge symmetry breaking dd→4Heπ0 reaction is calculated.