Measuring νµ Charged-Current Interactions in MiniBooNE

MiniBooNE seeks to confirm or refute the LSND νµ → νe oscillation signal with high statistical significance and different systematics. MiniBooNE has accumulated the world’s largest ∼1 GeV neutrino data set. MiniBooNE employs a cosmic muon calibration system to study the reconstruction of the energies and directions of muons in the detector. Progress of measurements of the νµ charged-current quasi-elastic and single pion production cross sections are presented. 1. The Importance of Measuring Muons in MiniBooNE MiniBooNE 1 is a neutrino oscillation experiment at Fermilab designed to confirm or rule out the hypothesis that the LSND νe excess 2 is due to νµ → νe oscillations. A general description of the experiment can be found elsewhere in these proceedings 3. The neutrino energy reconstruction is critical to the success of the MiniBooNE oscillation and cross section analyses. Charged current quasi-elastic (CCQE) events (νµn → µ − p) are typically used to measure the neutrino energy spectrum because they have simple kinematics. Neglecting the nucleon target momentum, the reconstructed quasi-elastic neutrino energy can be expressed in terms of the momentum