What does the muon-neutrino oscillate into?
  The favoured resolution of the atmospheric neutrino anomaly involves an oscillation of the muon neutrino to a different state. Current experiments allow for the latter to contain a significantly large fraction of a non-standard flavour. We demonstrate how the next generation of experiments may take advantage of matter effects to resolve this issue. 
Debajyoti Choudhury, Anindya Datta