Measurement of the neutrino contamination in MiniBooNE's anti-neutrino CCQE sample

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Aithousa Mitropoulos ()

Aithousa Mitropoulos

Megaron, Athens - Greece


Joe Grange (University of Florida)


The anti-neutrino charged current quasi-elastic (CCQE) sample at MiniBooNE suffers from a significant neutrino-induced CCQE background. Particle identification at MiniBooNE does not involve charge selection, so we must rely on other methods for measuring this contamination. The lepton production angle is used to perform a linear, two-template fit to data to measure this rate. Consistent results across different energy bins indicate that MiniBooNE's relativistic Fermi gas Monte Carlo model overestimates this rate on an absolute scale by around 10%, which excludes the default Monte Carlo prediction at the one sigma level. Across all energies, the neutrino contamination rate is determined to be 19.5 $\pm$ 5.4%.

Primary author

Joe Grange (University of Florida)

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