Analysis of the MINERvA antineutrino double-differential cross sections within the SuSAv2 model including meson-exchange currents

Abstract

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 $\Delta$-resonance propagator in the two-body currents on the data comparison.

arXiv comment9 pages, 4 figures

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