Hierarchical four-neutrino oscillations with a decay option - art. no. 071302

We present a new and novel synthesis of all existing neutrino data regardin g the disappearance and appearance of nu(e) and nu(mu). We assume four neut rinos: nu(e),nu(mu), nu(tau), as well as a heavier singlet neutrino nu(s) o f a few eV. The latter may decay into a massless Goldstone boson (the singl et Majoron) and a Linear combination of the doublet antineutrinos. We comme nt on how this scenario may be verified or falsified in future experiments. We point out how it allows us to evade the CDHSW constraints.