Neutrino Oscillations with Nil Mass
  An alternative neutrino oscillation process is presented as a counterexample for which the neutrino may have nil mass consistent with the standard model. The process is developed in a quantum trajectories representation of quantum mechanics, which has a Hamilton-Jacobi foundation. This process has no need for mass differences between mass eigenstates. Flavor oscillations and $\bar{\nu},\nu$ oscillations are examined. 
Edward R. Floyd
physics.gen-ph quant-ph