Toward Solution of the MiniBooNE-LSND Anomalies

The LSND experiment has observed an anomalous excess of events in a beam which can be interpreted as two-neutrino oscillations at Δm2∼1eV2, suggesting new physics. The MiniBooNE experiment has ruled out the LSND two-neutrino oscillation interpretation by looking for corresponding flavor oscillations in a neutrino beam, and assuming CP and CPT conservation. However, it has observed an anomalous excess of νe events at low energy, which, to date, remains unexplained. The two excess signatures are discussed within the context of light sterile neutrino oscillations, and are further confronted with the latest results from a MiniBooNE search for oscillations in an antineutrino beam. Alternative interpretations are also referenced, along with possible future experimental tests.