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We apply the GiBUU model to questions relevant for current and futureneutrino long-baseline experiments, we address in particular the relevance ofcharged-current reactions for neutrino disappearance experiments. A correctidentification of charged-current quasielastic (CCQE) events - which is thesignal channel in oscillation experiments - is relevant for the neutrino energyreconstruction and thus for the oscillation result. We show that about 20% ofthe quasielastic cross section is misidentified in present-day experiments andhas to be corrected for by means of event generators. Furthermore, we show thatalso a significant part of 1pi+ (> 40%) events is misidentified as CCQE mainlycaused by the pion absorption in the nucleus. We also discuss the dependence ofboth of these numbers on experimental detection thresholds. We furtherinvestigate the influence of final-state interactions on the neutrino energyreconstruction.

Neutrino-nucleus scattering reexamined: Quasielastic scattering and pion production entanglement and implications for neutrino energy reconstruction