We compare the results of the SuSAv2 model including meson-exchange currents (MEC) with the recent measurement of the quasielastic-like double differential antineutrino cross section on hydrocarbon (CH) performed by the MINERvA Collaboration. The relativistic nature of the model makes it suitable to describe these data, which correspond to a mean beam energy of 3.5 GeV. The standard SuSAv2 model predictions agree well with the data without needing any additional or tuned parameter. The role of longitudinal MEC is non-negligible and improves the agreement with the data. We also consider the impact of different treatments of the Δ-resonance propagator in the two-body currents on the data comparison.
@article{arxiv.1807.10532,
title = {Analysis of the MINERvA antineutrino double-differential cross sections within the SuSAv2 model including meson-exchange currents},
author = {G. D. Megias and M. B. Barbaro and J. A. Caballero and S. Dolan},
journal= {arXiv preprint arXiv:1807.10532},
year = {2019}
}