Neutrino-nucleus scattering in the SuSA model

Abstract

The super-scaling approach (SuSA) model, based on the analogies between electron and neutrino interactions with nuclei, is reviewed and its application to the description of neutrino-nucleus scattering is presented. The contribution of both one- and two-body relativistic currents is considered. The model is validated with the $$(e,e')$$ ( e , e ′ ) data, including also inelastic contributions for the inclusive reaction. A discussion of semi-inclusive reactions and their implications for charge-changing reactions of neutrinos is also presented. A selection of results for the inclusive neutrino reactions with change of charge is presented where theoretical predictions are compared with cross-section measurements from the main ongoing neutrino oscillation experiments.

Theoretical tools for neutrino scattering: interplay between lattice QCD, EFTs, nuclear physics, phenomenology, and neutrino event generators

“…Without aiming to be exhaustive, often adopted approaches include Superscaling methods as SuSA(v2), exploiting equivalences between electron-and neutrino scattering processes, based on the scaling behaviour exhibited by electroweak scattering data and ported to relativistic mean-field modeling [435] and extended to include meson-exchange contributions to the cross-section [436]. See [437] for a recent review.…”

Event Generators for High-Energy Physics Experiments

“…Current modeling improvements include the implementation of the state-of-the-art CCQE and multi-nucleon model by Amaro et al [1056], and single pion production models by Kabirnezhad [911] and by Sato et al [1057]. The implementation of a rudimentary QE-only electron-scattering simulation in NEUT is underway.…”

Improved Superscaling in Quasielastic Electron Scattering with Relativistic Effective Mass

“…The widely used model of superscaling assumes factorization of the electron-nucleus scattering cross section, which is proportional to the average electron-nucleon scattering probability times a phenomenological scaling function that incorporates the nuclear structure information [21,22]. Despite their limitations, such as neglecting the effects of final-state interactions and meson-exchange currents, this approach has the potential to provide an accurate description of the quasielastc electron and neutrino scattering data in the quasielastic peak region with only a few parameters: the Fermi momentum, k F , and the relativistic effective mass, m * N -or the nucleon separation energy depending on the particular approach to superscaling [23]-as well as the phenomenological scaling function. Several methods have been employed to extract the phenomenological scaling function from experimental data.…”