  The factorization scheme, based on the impulse approximation and the spectral
function formalism, has been recently generalized to allow the description of
electromagnetic nuclear interactions driven by two-nucleon currents. We have
extended this framework to the case of weak charged and neutral currents and
carried out calculations of the double-differential neutrino-carbon and
neutrino-oxygen cross sections using two different models of the target
spectral functions. The results, showing a moderate dependence on the input
spectral function, confirm that our approach provides a consistent treatment of
all reaction mechanisms contributing to the signals detected by
accelerator-based neutrino experiments.
