Meson-exchange currents and quasielastic antineutrino cross sections in   the SuperScaling Approximation
  We evaluate quasielastic double-differential antineutrino cross sections obtained in a phenomenological model based on the superscaling behavior of electron scattering data and estimate the contribution of the vector meson-exchange currents in the 2p-2h sector. We show that the impact of meson-exchange currents for charge-changing antineutrino reactions is much larger than in the neutrino case. 
J. E. Amaro, M. B. Barbaro, J. A. Caballero, T. W. Donnelly
nucl-th hep-ph nucl-ex