No abstract

The structure of the weak axial pion exchange current is discussed in various models. It is shown how the interplay of the chiral invariance and the double counting problem restricts uniquely the form of the pion potential term, in the case when the nuclear dynamics is described by the Schrödinger equation with static nucleon-nucleon potential.PACS. 11.40.Ha Partially conserved axial-vector currents 25.30.-c Lepton-induced nuclear reactions

No abstract