Abstract:
T2K has performed the first measurement of νμ inclusive charged current interactions on carbon at
neutrino energies of ∼1 GeV where the measurement is reported as a flux-averaged double differential
cross section in muon momentum and angle. The flux is predicted by the beam Monte Carlo and
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external data, including the results from the NA61/SHINE experiment. The data used for this
measurement were taken in 2010 and 2011, with a total of 10.8 × 1019 protons-on-target. The
analysis is performed on 4485 inclusive charged current interaction candidates selected in the most
upstream fine-grained scintillator detector of the near detector. The flux-averaged total cross section
is hσCCi = (6.91±0.13(stat)±0.84(syst))×10−39 cm2
nucleon for a mean neutrino energy of 0.85 GeV.