# Spacetime assumptions at OPERA

I would like to know what are the assumptions about the spacetime metric between the neutrinos emiter and detector, I mean, perhaps (just a stab in the dark) could be a mistake to asume the metric of the middle spacetime, because we don't really know how clocks behave at every centimeter of the beam path.

Is there a single metric for a given system?

What are the assumptions about the spacetime metric? Could those be the problem?

-
I'll have to check the paper to see what assumptions they did make, but I doubt it would account for the discrepancy. It would take a lot of energy to warp spacetime enough to generate a 60ns discrepancy (18m at near-light speed), and we would have detected the gravitational effects of that. –  David Z Sep 30 '11 at 1:47
In case you haven't found the collaboration's preprint, here it is: arxiv.org/abs/1109.4897 . I haven't yet had the opportunity to read it throughout, so I suggest you give it a look if you haven't done so already. –  jbatista Sep 30 '11 at 15:26