Neutrino-nucleus CC0π cross-section tuning in GENIE v3

Abstract

This article summarizes the state of the art of ${\ensuremath{\nu}}_{\ensuremath{\mu}}$ and ${\overline{\ensuremath{\nu}}}_{\ensuremath{\mu}}$ $\mathrm{CC}0\ensuremath{\pi}$ cross-section measurements on carbon and argon and discusses the relevant nuclear models, parametrizations and uncertainties in GENIE v3. The $\mathrm{CC}0\ensuremath{\pi}$ event topology is common in experiments at a few-GeV energy range. Although its main contribution comes from quasielastic interactions, this topology is still not well understood. The GENIE global analysis framework is exploited to analyze $\mathrm{CC}0\ensuremath{\pi}$ datasets from MiniBooNE, T2K and $\mathrm{MINER}\ensuremath{\nu}\mathrm{A}$. A partial tune for each experiment is performed, providing a common base for the discussion of tensions between datasets. The results offer an improved description of nuclear $\mathrm{CC}0\ensuremath{\pi}$ datasets as well as data-driven uncertainties for each experiment. This work is a step towards a GENIE global tune that improves our understanding of neutrino interactions on nuclei. It follows from earlier GENIE work on the analysis of neutrino scattering datasets on hydrogen and deuterium.