Backgrounds in Neutrino Appearance Signal at MiniBooNE
  The MiniBooNE (Booster Neutrino Experiment) experiment is a precise search for neutrino oscillations but is crucially sensitive to background processes that would mimic an oscillation signal. The background sources include intrinsic $\nu_{e}$ from kaon and muon decays, mis-identified $\pi^{0}$, gammas from radiative delta decays, and muon neutrino events mis-identified as electrons. A summary of these backgrounds and the tools to handle them is presented. 
Zelimir Djurcic (for the MiniBooNE Collaboration)