The role of meson exchange currents in charged current   (anti)neutrino-nucleus scattering
  We present our recent progress in the description of neutrino-nucleus interaction in the GeV region, of interest for ongoing and future oscillation experiments. In particular, we discuss the weak excitation of two-particle-two-hole states induced by meson exchange currents in a fully relativistic framework. We compare the results of our model with recent measurements of neutrino scattering cross sections, showing the crucial role played by two-nucleon knockout in the interpretation of the data. 
M.B. Barbaro, J.E. Amaro, J.A. Caballero, A. De Pace, T.W. Donnelly,   G.D. Megias, I. Ruiz Simo
nucl-th hep-ph nucl-ex