Testing of quasi-elastic neutrino charged-current and two-body meson exchange current models with the MiniBooNE neutrino data and analysis of these processes at energies available at the NOvA experiment

摘要

The charged-current quasi-elastic scattering of muon neutrinos on a carbon target is analyzed using the relativistic distorted-wave impulse approximation (RDWIA), taking into account the contribution of the two-particle and two-hole meson exchange current (MEC) to the weak response functions. A fit the RDWIA + MEC model to the MiniBooNE neutrino data is performed, and the best-fit value of nucleon axial mass M A ≈ 1.20 ? ? GeV is obtained. We also extract the values of the axial form factor F A ( Q 2 ) as a function of the squared momentum transfer Q 2 from the measured d σ / d Q 2 cross section. The flux-integrated charged-current quasi-elastic–like differential cross sections for neutrino scattering at energies of the NOvA experiment are estimated within the RDWIA + MEC approach.