Why? That doesn’t make sense. And its never been observed so how would anyone test that?
Cherenkov Radiation Requires Charged Particles – But Neutrinos Have No Charge
But Neutrinos are neutral, they have no charge. Furthermore, because they are fundamental particles; they don’t have any electrons.
Commentary: Since Neutrinos have never been observed directly making Cherenkov Radiation – why should anyone imagine they should?
Yes, Neutrinos are commonly detected by observing Cherenkov Radiation, but indirectly – not directly. That extremely rare Cherenkov Radiation detection glow is not from a Neutrino – it comes from an Electron. It occurs in the extremely rare event of a Neutrino hitting an Electron head-on.
This particular suggestion does not seem to hold water.
However, you might want to read why Matt Strassler disagrees. He bases this on the existence of a Neutrino non-zero magnetic moment. My response is that no Neutrino magnetic moment has ever been observed either; it is only postulated.
I do remain concerned that the OPERA experiment is only Detecting Only 1 Neutrino per Hour.
New Constraints on Neutrino Velocities