Measurement of the muon antineutrino double-differential cross section for quasielastic-like scattering on hydrocarbon at <math><msub><mi>E</mi><mi>ν</mi></msub><mo>∼</mo><mn>3.5</mn><mtext> </mtext><mtext> </mtext><mi>GeV</mi></math>

We present double-differential measurements of antineutrino charged-current quasielastic scattering in the MINERvA detector. This study improves on a previous single-differential measurement by using updated reconstruction algorithms and interaction models and provides a complete description of observed muon kinematics in the form of a double-differential cross section with respect to muon transverse and longitudinal momentum. We include in our signal definition zero-meson final states arising from multinucleon interactions and from resonant pion production followed by pion absorption in the primary nucleus. We find that model agreement is considerably improved by a model tuned to MINERvA inclusive neutrino scattering data that incorporates nuclear effects such as weak nuclear screening and two-particle, two-hole enhancements.