A close link between electron-nucleus scattering and neutrino-nucleus scattering*

  Neutrino oscillation experiments aiming to measure CP violating phase and mass-hierarchy need accuracy of 5% or better in neutrino-nucleus cross section. Nuclei which current and future neutrino oscillation experiments use as targets are carbon, oxygen, ion and argon. The charged-current neutrino-nucleus quasi-elastic scattering (and also pion production) is the dominant reaction in the neutrino energy from 200 MeV to GeV region. This quasi-elastic scattering is mainly used in the experiments to reconstruct the neutrino energy which determines the neutrino oscillations.

  CVC hypothesis states that an iso-vector part of the neutrino-nucleus charged-current and an iso-vector part of electron-nucleus electromagnetic current form a triplet of iso-vector current.  I would like to start with a close link between electron-nucleus scattering and neutrino-nucleus scattering and then, review nuclear effects, such as form factors, initial/final state interactions and Pauli blocking, which electron-nucleus scattering experiments can answer and are very important for the precision of the neutrino-nucleus scattering experiments.