Neutrino dispersion relation changes due to radiative corrections as the   origin of faster-than-light-in-vacuum propagation in a medium
  Radiative corrections to the dispersion of neutrinos in nonstandard vacuum may give rise to "boosts" in their speed. This could explain recent experimental evidence by the OPERA collaboration, as well as the null result indicated by the supernova 1987A (SN 1987A) measurements of neutrino and photon arrival times. 
Karl Svozil
physics.gen-ph