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We present the implementation and validation of the Hartree-Fock continuumrandom phase approximation (HF-CRPA) model in the GENIE neutrino-nucleusinteraction event generator and a comparison of the subsequent predictions toexperimental measurements of lepton kinematics from interactions with no mesonsin the final state. These predictions are also compared to those of othermodels available in GENIE. It is shown that, with respect to these models,HF-CRPA predicts a significantly different evolution of the cross section whenmoving between different interaction targets, when considering incominganti-neutrinos compared to neutrinos and when changing neutrino energies. Thesedifferences are most apparent for interactions with low energy and momentumtransfer. It is also clear that the impact of nucleon correlations within theHF-CRPA framework is very different than in GENIE's standard implementation ofRPA corrections. Since many neutrino oscillation experiments rely on theirinput model to extrapolate between targets, flavours, and neutrino energies,the newly implemented HF-CRPA model provides a useful means to verify that suchdifferences between models are appropriately covered in oscillation analysissystematic error budgets.

Implementation of the CRPA model in the GENIE event generator and analysis of nuclear effects in low-energy transfer neutrino-nucleus interactions