Pion Effects on Fermi Interactions

Fermi interactions are examined from the standpoint that the interaction between bare nucleons and light fermions may have simple form. The relation of this proposal to the usual expression of Fermi interactions in terms of physical nucleons is evaluated. This relation is specified fairly definitely by current meson theories for allowed β-decay processes. The possibility of a simple universal Fermi interaction and the relation of associated allowed and forbidden β-decay matrix elements are examined. Although some interesting conclusions can be drawn in these cases, the effects do not appear observable at the present time.