Speaker
Description
Modern neutrino oscillation experiments use neutrino event generators to determine systematic uncertainties, often arising due to model dependence. Final state interactions (FSI), which are modelled using intranuclear cascade models, are a dominant source of uncertainty in these experiments; as experimental improvements both decrease statistical uncertainty and allow lower nucleon momenta to be probed, the systematic uncertainty due to FSI modelling will be exacerbated.
Widely used in the nuclear physics community, The Liège intranuclear cascade model (INCL++) has been shown to perform very well against data compared to standard cascade models, especially in regions of lower nucleon momenta. Previous studies of INCL++ using the NuWro event generator also demonstrated a wider range of final state topologies due to the introduction of nuclear clusters from FSI and remnant de-excitation. Accurate modelling of this may improve uncertainty estimates of neutrino energy reconstruction and help constrain nuclear models.
This talk will discuss the implementation of the INCL++ model into NEUT and the performance of the model compared to previous studies with NuWro. Efforts to expand upon prior work by incorporating short-range correlation (SRC) events will be discussed, highlighting the effect that varying SRC modelling has on final state topology. Comparisons to NEUT’s original cascade will also be shown, demonstrating how improvements to our FSI modelling may widen our scope to unexplored areas of neutrino-nucleus interactions in the future.