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The MiniBooNE large axial mass anomaly has prompted a great deal oftheoretical work on sophisticated Charged Current Quasi-Elastic (CCQE) neutrinointeraction models in recent years. As the dominant interaction mode at T2Kenergies, and the signal process in oscillation analyses, it is important forthe T2K experiment to include realistic CCQE cross section uncertainties in T2Kanalyses. To this end, T2K's Neutrino Interaction Working Group has implementeda number of recent models in NEUT, T2K's primary neutrino interaction eventgenerator. In this paper, we give an overview of the models implemented, andpresent fits to published muon neutrino and muon antineutrino CCQE crosssection measurements from the MiniBooNE and MINERvA experiments. The results ofthe fits are used to select a default cross section model for future T2Kanalyses, and to constrain the cross section uncertainties of the model. Wefind a model consisting of a modified relativistic Fermi gas model andmultinucleon interactions most consistently describes the available data.

Testing CCQE and 2p2h models in the NEUT neutrino interaction generator with published datasets from the MiniBooNE and MINERvA experiments