Ramifications of intranuclear re-scattering in MINOS

MINOS will measure the composition of a νμ beam at two locations, 735 km apart, in an effort confirm the (atmospheric) neutrino oscillation hypothesis and measure the mixing parameters and sin2(2θ23). Oscillations will be manifested as a difference in the rate and energy spectrum of νμ−CC interactions measured in the two detectors. Because most interactions observed in MINOS are inelastic, the νμ energy is reconstructed as the sum of the energy carried by the muon and that seen in the hadronic shower emanating from the struck nucleus. The latter is sensitive to uncertainties in the hadronisation process, chief among them those due to intranuclear re-scattering (i.e., final state interactions). We discuss the simulation of intranuclear re-scattering currently used by MINOS and its effect on quantities observable in the experiment.