Measurement of the muon antineutrino double-differential cross section for quasielastic-like scattering on hydrocarbon at Eν ∼ 3.5 GeV

Author(s): Patrick, CE; Aliaga, L; Bashyal, A; Bellantoni, L; Bercellie, A; Betancourt, M; Bodek, A; Bravar, A; Budd, H; Caceres, GFRV; Carneiro, MF; Chavarria, E; Da Motta, H; Dytman, SA; Diaz, GA; Felix, J; Fields, L; Fine, R; Gago, AM; Galindo, R; Gallagher, H; Ghosh, A; Gran, R; Han, JY; Harris, DA; Henry, S; Hurtado, K; Jena, D; Kleykamp, J; Kordosky, M; Le, T; Lu, XG; Maher, E; Manly, S; Mann, WA; Marshall, CM; McFarland, KS; McGowan, AM; Messerly, B; Miller, J; Mislivec, A; Morfin, JG; Mousseau, J; Naples, D; Nelson, JK; Norrick, A; Nowak, GM; Nuruzzaman; Paolone, V; Perdue, GN; Peters, E; Ramirez, MA; Ransome, RD; Ray, H; Ren, L; Rodrigues, PA; Ruterbories, D; Schellman, H; Solano Salinas, CJ; Sultana, M; Sanchez Falero, S; Teklu, AM; Valencia, E; Wolcott, J; Wospakrik, M; Yaeggy, B; Zhang, D | Abstract: © 2018 authors. 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.