Quote ="vbfg"I don't think that survives Occam either tbh. AFAIK the root of what he says is that they didn't account for all the frame of reference errors from the relative motion of the satellites and the earth. But GPS itself does that. ...'"
It does indeed, but the (alleged) error seems to be in the fatal assumption that their timing clocks were stationary. It is easy to think your clocks at each end of the experiment are staironary, but in fact they are not; the readout appears on the clocks, but the measurements rely on a moving satellite. The clocks' synchronizing reference point is located not where the clocks are, but in orbit.
Quote ="van Elburg"because the satellites are moving, from their point of view, the positions of the neutrinos and the detector are changing. The neutrinos are moving toward the detector, and the detector appears to be moving toward the neutrino source. So the distance between the origin and destination appears to be shorter than it would if it were being observed on the ground.
“Consequently, in this reference frame the distance traveled by the [particles is shorter than the distance separating the source and detector. This phenomenon is overlooked because the OPERA team thinks of the clocks as on the ground — which they are, physically — and not in orbit, which is where their synchronizing reference point is located.'"
Using the altitude, orbital period, inclination to the equator and other metrics, van Elburg calculates the error rate:
Quote “The observed time-of-flight should be about 32 ns shorter than the time-of-flight using a baseline bound clock,” he writes. This is done at both clock locations, so double that, and you get an early-arrival time of 64 nanoseconds. "'"
He hasn't published this formally as yet, and of course it will then go to peer review. But I like it.
