Abstract
Kinematic distributions from an inclusive sample of charged-current interactions on iron, obtained using the MINOS near detector exposed to a wide-band beam with peak flux at 3 GeV, are compared to a conventional treatment of neutrino scattering within a Fermi gas nucleus. Results are used to guide the selection of a subsample enriched in quasielastic interactions, containing an estimated 123,000 quasielastic events of incident energies , with . Four additional subsamples representing topological and kinematic sideband regions to quasielastic scattering are also selected for the purpose of evaluating backgrounds. Comparisons using subsample distributions in four-momentum transfer show the Monte Carlo model to be inadequate at low . Its shortcomings are remedied via inclusion of a -dependent suppression function for baryon resonance production, developed from the data. A chi-square fit of the resulting Monte Carlo simulation to the shape of the distribution for the quasielastic-enriched sample is carried out with the axial-vector mass of the dipole axial-vector form factor of the neutron as a free parameter. The effective which best describes the data is .
6 More- Received 30 October 2014
DOI:https://doi.org/10.1103/PhysRevD.91.012005
© 2015 American Physical Society