At the moment the OPERA faster than light (FTL) result is far too uncertain to be trusted, and needs replication, but, in an article just published in New Scientist [1] (see below) R. Garisto argues that: "models which explain [the FTL] by breaking relativity are ruled out". He says he knows this because a recent paper by Cohen and Glashow [2] proposed that a neutrino going faster than light "may lose energy rapidly by bremsstrahlung", and the OPERA neutrinos did not, so they cannot have travelled FTL. Surely there is an error in logic here, since Garisto is effectively saying: you cannot violate standard physics unless you do it using standard physics.
Travelling faster than light violates standard physics in about the biggest way possible, and it is wrong to reject theories that explain experimental results (as Garisto says he has) by saying that they violate standard physics. Such an attitude would doom fundamental physics to an endless sterility. In physics, experiment (even if later shown to be flawed) must come first. If the OPERA result is supported experimentally, then standard physics is going to have to mumble sheepish apologies, and new physics will be needed. My point here is not that I think the OPERA result is necessarily correct, but rather that, in cases like this, objective logic should be applied, rather than a blind faith in standard physics.
[1] http://www.newscientist.com/article/dn21515-lights-speed-limit-is-safe-for-now.html
[2] http://prl.aps.org/abstract/PRL/v107/i18/e181803
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