Dynamical Model of Coherent Electroweak Pion Production Reactions on Nuclei

We have developed a dynamical model for a unified description of the pion‐nucleus scattering and photo‐ and neutrino‐induced coherent pion production on nuclei. Our approach is based on a combined use of the Sato‐Lee model for the electroweak pion production on a single nucleon and the Δ‐hole model of pion‐nucleus scattering. Numerical calculations are carried out for the case of the 12C target. After testing our model with the use of the pion photo‐production data, we confront our predictions of the neutrino‐induced coherent pion production reactions with the recent data from K2K and MiniBooNE.