"The scientists are right to be extremely cautious about interpreting these findings," said Jim Al-Khalili, a physicist from the University of Surrey, who suggested that a simple error in the measurement is probably the source of all the fuss.
But he has gone further.
"So let me put my money where my mouth is: if the Cern experiment proves to be correct and neutrinos have broken the speed of light, I will eat my boxer shorts on live TV."
The rechecked the thing 1500 times? Overkill much? Now I KNOW it was a screw up.
That's exactly what I was thinking of. As the article implies, we don't really know the speed of light, just that it's a constant (or, as you say, that the constant is necessarily the speed of light). So the neutrinos could indeed be "superluminal" according to current measurements without being tachyonic or leading to causality violations.The neutrinos are having to travel through a section of the Earth's crust so there must be some tunnelling involved - of the quantum variety - as there is very small cross section for weak force interaction between neutrinos and the matter in their path. I believe some experiments have previously demonstrated that quantum tunnelling is superluminal for photons:
http://en.wikipedia.org/wiki/Faster...t_.28Casimir_vacuum_and_quantum_tunnelling.29
Sorry, I haven't bothered to find a non-Wikiprdia reference.
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