Wilkinson, C. and Terri, R. and Andreopoulos, C. and Bercellie, A. and Bronner, C. and Cartwright, S. and Perio, P. de and Dobson, J. and Duffy, K. and Furmanski, A. P. and Haegel, L. and Hayato, Y. and Kaboth, A. and Mahn, K. and McFarland, K. S. and Nowak, J. and Redij, A. and Rodrigues, P. and Sánchez, F. and Schwehr, J. D. and Sinclair, P. and Sobczyk, J. T. and Stamoulis, P. and Stowell, P. and Tacik, R. and Thompson, L. and Tobayama, S. and Wascko, M. O. and Żmuda, J. (2016) Testing CCQE and 2p2h models in the NEUT neutrino interaction generator with published datasets from the MiniBooNE and MINERvA experiments. Physical Review D, 93 (7): 072010. ISSN 1550-7998
1601_1_.05592v1.pdf - Accepted Version
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PhysRevD.93.072010.pdf - Published Version
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Abstract
The MiniBooNE large axial mass anomaly has prompted a great deal of theoretical work on sophisticated Charged Current Quasi-Elastic (CCQE) neutrino interaction models in recent years. As the dominant interaction mode at T2K energies, and the signal process in oscillation analyses, it is important for the T2K experiment to include realistic CCQE cross section uncertainties in T2K analyses. To this end, T2K's Neutrino Interaction Working Group has implemented a number of recent models in NEUT, T2K's primary neutrino interaction event generator. In this paper, we give an overview of the models implemented, and present fits to published muon neutrino and muon antineutrino CCQE cross section measurements from the MiniBooNE and MINERvA experiments. The results of the fits are used to select a default cross section model for future T2K analyses, and to constrain the cross section uncertainties of the model. We find a model consisting of a modified relativistic Fermi gas model and multinucleon interactions most consistently describes the available data.