PT Journal AU Nieves, J Ruiz Simo, I Vicente Vacas, MJ TI Two particle-hole excitations in charged current quasielastic antineutrino-nucleus scattering SO Physics Letters B JI Phys. Lett. B PY 2013 BP 90 EP 93 VL 721 IS 1-3 DI 10.1016/j.physletb.2013.03.002 LA English AB We evaluate the quasielastic and multinucleon contributions to the antineutrino-nucleus scattering cross section and compare our results with the recent MiniBooNE data. We use a local Fermi gas model that includes RPA correlations and gets the multinucleon part from a systematic many body expansion of the W boson selfenergy in the nuclear medium. The same model had been quite successful for the neutrino cross section and contains no new parameters. We have also analyzed the relevance of 2p2h events for the antineutrino energy reconstruction. ER