Towards a unified model of neutrino-nucleus reactions for neutrino oscillation experiments

S. X. Nakamura, H. Kamano, Y. Hayato, M. Hirai, W. Horiuchi, S. Kumano, T. Murata, K. Saito, M. Sakuda, T. Sato, Y. Suzuki

Research output: Contribution to journalReview article

12 Citations (Scopus)

Abstract

A precise description of neutrino-nucleus reactions will play a key role in addressing fundamental questions such as the leptonic CP violation and the neutrino mass hierarchy through analyzing data from next-generation neutrino oscillation experiments. The neutrino energy relevant to the neutrino-nucleus reactions spans a broad range and, accordingly, the dominant reaction mechanism varies across the energy region from quasi-elastic scattering through nucleon resonance excitations to deep inelastic scattering. This corresponds to transitions of the effective degree of freedom for theoretical description from nucleons through meson-baryon to quarks. The main purpose of this review is to report our recent efforts towards a unified description of the neutrino-nucleus reactions over the wide energy range; recent overall progress in the field is also sketched. Starting with an overview of the current status of neutrino-nucleus scattering experiments, we formulate the cross section to be commonly used for the reactions over all the energy regions. A description of the neutrinonucleon reactions follows and, in particular, a dynamical coupled-channels model for meson productions in and beyond the δ(1232) region is discussed in detail. We then discuss the neutrino-nucleus reactions, putting emphasis on our theoretical approaches. We start the discussion with electroweak processes in few-nucleon systems studied with the correlated Gaussian method. Then we describe quasi-elastic scattering with nuclear spectral functions, and meson productions with a δ-hole model. Nuclear modifications of the parton distribution functions determined through a global analysis are also discussed. Finally, we discuss issues to be addressed for future developments.

Original languageEnglish
Article number056301
JournalReports on Progress in Physics
Volume80
Issue number5
DOIs
Publication statusPublished - Apr 10 2017

Keywords

  • many-body theory
  • neutrino oscillation
  • neutrino-nucleus interaction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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    Nakamura, S. X., Kamano, H., Hayato, Y., Hirai, M., Horiuchi, W., Kumano, S., Murata, T., Saito, K., Sakuda, M., Sato, T., & Suzuki, Y. (2017). Towards a unified model of neutrino-nucleus reactions for neutrino oscillation experiments. Reports on Progress in Physics, 80(5), [056301]. https://doi.org/10.1088/1361-6633/aa5e6c