  Charged-current single pion production in scattering off 12C is investigated
for neutrino energies up to 1 GeV. An impact of nuclear effects with in-medium
modifications of the Delta(1232) resonance properties as well as an effective
field theory nonresonant background contribution are discussed. Dependence of
the fraction of Delta(1232) decays into npnh states on incident neutrino energy
is estimated. A model of Nieves et al. [1] is further developed by performing
exact integration avoiding several approximations. The effect of exact
integration is investigated both for double-differential and total
neutrino-nucleus cross sections.

Nuclear Theory;High Energy Physics - Phenomenology