Dynamical Model of Coherent Pion Production in Neutrino-Nucleus Scattering

Satoshi Nakamura
EBAC, JLab

I report our recent work on coherent pion production in
neutrino-nucleus scattering in the energy region relevant to neutrino
oscillation experiments of current interest. Our approach is based on a
combined use of the Sato-Lee model of electroweak pion production on a
nucleon and the Delta-hole model of pion-nucleus reactions. Thus we develop
a model which describes pion-nucleus scattering and electroweak coherent
pion production in a unified manner. All the free parameters in our model
are fixed by fitting to both total and elastic differential cross sections
for pi-12C scattering. Then we demonstrate the reliability of our approach
by confronting our prediction for the coherent pion photo-productions with
data. Finally, we calculate total and differential cross sections for
neutrino-induced coherent pion production, and some of the results are
compared with the recent data from K2K, SciBooNE and MiniBooNE.