The Current Challenges in Understanding the Shallow- and Deep Inelastic Regimes in Neutrino Nucleus Scattering

One of the most poorly studied kinematic regions in neutrino nucleus scattering is the transition region from the Delta resonance production to DIS - often called shallow-inelastic scattering. It is also the non-perturbative/perturbative QCD transition region that introduces many non-perturbative QCD effects. Even within the DIS regime, there are also concerns from the comparison of nuclear PDFs between nu-A and e/mu-A scattering that have to be addressed. This talk will summarize this situation.