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Re: [Phys-l] Neutrinos going faster than speed of light?



Regarding Chuck's wonder:

I've looked (briefly) the paper and wonder (naively) if they
could put a modulated laser beam down the flight path to get a
decent length confirmation.

How would propose to get a laser to propagate any photons through 732 km of bedrock & soil without being scattered and absorbed along the way? Even a gamma ray laser would have a tough time of it. Perhaps a VLF radio signal would propagate thorough that stuff, but that would have major collimation problems (not to mention problems characterizing the index of refraction well enough along the path, which would include a sampling of a very wide range of stuff including the air above the soil & rock).

David Bowman