Abe, K.Hillairet, AnthonyKarlen, Deanet al.T2K Collaboration2020-01-162020-01-1620172017Abe, K.; Amey, J.; Andreopoulos, C.; Antonova, M.; Aoki, S.; Ariga, A.; … & Zito, M. (2017). Measurement of ¯νμ and νμ charged current inclusive cross sections and their ratio with the T2K off-axis near detector. Physical Review D, 96(5), article 52001. DOI: 10.1103/PhysRevD.96.052001https://doi.org/10.1103/PhysRevD.96.052001http://hdl.handle.net/1828/11489We report a measurement of cross section σ(νμ+nucleus→μ−+X) and the first measurements of the cross section σ(¯νμ+nucleus→μ++X) and their ratio R(σ(¯ν)σ(ν)) at (anti) neutrino energies below 1.5 GeV. We determine the single momentum bin cross section measurements, averaged over the T2K ¯ν/ν-flux, for the detector target material (mainly carbon, oxygen, hydrogen and copper) with phase space restricted laboratory frame kinematics of θμ<32° and pμ>500  MeV/c. The results are σ(¯ν)=(0.900±0.029(stat)±0.088(syst))×10−39 and σ(ν)=(2.41±0.022(stat)±0.231(syst))×10−39 in units of cm2/nucleon and R(σ(¯ν)σ(ν))=0.373±0.012(stat)±0.015(syst).enpaticle interactionsArticleDepartment of Physics and Astronomy