a0(980)–f0(980) mixing and isospin violation in the reactions pN→da0, pd→3He/3Ha0 and dd→4Hea0

Abstract It is demonstrated that f0–a0 mixing can lead to a comparatively large isospin violation in the reactions pN→da0, pd→ 3 He / 3 H a 0 and dd→ 4 He a 0 close to the corresponding production thresholds. The observation of such mixing effects is possible, e.g., by measuring the forward–backward asymmetry in the reaction pn→da 0 0 →dη π 0 .