Hi,
I downloaded the experimenters' original paper
where they discuss at great length all the corrections
they applied and THAT correction is not mentioned
nor acknowledged to be needed. So, we don't know
if they were aware of it or not.
In this latest news piece, they do not address the
relativistic analysis. They do address another
criticism, that of too wide a packet length for the
little neutral ones.
They suggest possibly running a fiber the 454
miles between the sites, to measure the "light-time."
It seems to me that if they had accounted for the
relativistic effects beforehand (and neglected to
mention it their paper), they would merely say so
and have done with it.
I'm not putting any big money bets on really fast
neutrinos, not in this frame of reference.
Sterling K. Webb
--------------------------------------------------------------------
----- Original Message -----
From: "Matson, Robert D." <[email protected]>
To: "JoshuaTreeMuseum" <[email protected]>;
<[email protected]>
Sent: Friday, November 18, 2011 5:44 PM
Subject: Re: [meteorite-list] Second experiment confirms
faster-than-lightparticles
Hi Phil,
It was my understanding that the mystery of the CERN faster-than-
light-speed neutrino result was solved over a month ago: failure
to account for the relativistic motion of the GPS clocks used to
time the neutrinos.
GPS satellites orbit in planes inclined 55 degrees relative to
the equator, coincidentally somewhat parallel to the neutrino
flight path bearing on the ground. From the satellite's perspective,
both the positions of the neutrino source and the neutrino detector
are changing: in this particular case, from the perspective of the
GPS clock, the detector is moving towards the neutrino source, and
consequently the distance travelled by the particles -- as measured
in the frame of the clock -- is shorter than the distance measured
on the ground. As a result, the neutrinos should arrive about 32
nanoseconds early: an amount that must be doubled because the same
error occurs at each end of the experiment. So the total correction
is 64 nanoseconds: almost exactly what the OPERA team observed.
If they ran the experiment a second time and got the same result,
it seems to me that it is only confirming a prediction of
special relativity. --Rob
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