Physical Review Letters
We report a study of nu(mu) charged-current quasielastic events in the segmented scintillator inner tracker of the MINERvA experiment running in the NuMI neutrino beam at Fermilab. The events were selected by requiring a mu(-) and low calorimetric recoil energy separated from the interaction vertex. We measure the flux-averaged differential cross section, d sigma/dQ(2), and study the low energy particle content of the final state. Deviations are found between the measured d sigma/dQ(2) and the expectations of a model of independent nucleons in a relativistic Fermi gas. We also observe an excess of energy near the vertex consistent with multiple protons in the final state.
Fiorentini, G. A., Schmitz, D. W., Rodrigues, P. A., Aliaga, L., Altinok, O., Baldin, B., ... & Bradford, R. (2013). Measurement of muon neutrino quasielastic scattering on a hydrocarbon target at E ν∼ 3.5 GeV. Physical review letters, 111(2), 022502.