This seminar is dedicated to the MiniBooNE experiment that has been recording an anomalous excess of electron-like events for over a decade, suggesting non-standard oscillation features at very short, kilometre-scale, baseline. The leading explanation for this observation features the introduction of eV-scale sterile neutrino that is capable of inducing neutrino flavour change across short baselines. I will first critically examine a number of theoretical uncertainties affecting the MiniBooNE event prediction, focusing on charged current quasielastic events, events from neutral pion decay and single-photon events from decays of heavy resonances. Finally, I will show how the aforementioned uncertainties affect the fit of a sterile neutrino scenario as well as refer to alternative new physics models for resolving the MiniBooNE anomaly.
CTGWG