Dynamical Model of Electroweak Pion Production Reaction
  The dynamical model of pion electroproduction developed by the authors has been extended to study the pion weak production reaction. The axial vector N-Delta transition form factor G_A^{N\Delta} obtained from the analysis of existing neutrino reaction data and the role of dynamical pion cloud on G_A^{N\Delta} are discussed. 
T. Sato and T.-S. H. Lee