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Location: UFOUpDatesList.Com > 2011 > Sep > Sep 28

Re: D'oh! Light Speed Threshold Broken?

From: Martin Shough <parcellular.nul>
Date: Tue, 27 Sep 2011 15:47:16 +0100
Archived: Wed, 28 Sep 2011 08:27:47 -0400
Subject: Re: D'oh! Light Speed Threshold Broken?


>From: Martin Shough <parcellular.nul>
>To: <post.nul>
>Date: Mon, 26 Sep 2011 13:00:51 +0100
>Subject: Re: D'oh! Light Speed Threshold Broken?

>I wanted to point out that superluminal neutrinos are not
>necessarily forbidden in existing physics. The basic explanation
>of 'why' seems to be that the limits on neutrino mass are
>limits on a quantity which is really mass (or momentum actually)
>squared, so the root can be negative.

I think I got this back to front ('surely not!' came the
astonished chorus ;-)). It's the squared momentum that's
negative, but the equation can be rewritten to express the root
mass as positive, and this is what is _usually_ done. The thrust
of the tachyonic neutrino theorists has been to see this as a
'fix' too far and accept an imaginary mass, implying speed >c.
Sorry.

See:

http://arxiv.org/PS_cache/hep-ph/pdf/0009/0009291v3.pdf

And a CERN paper apparently from 1998 (oddly, 2008 appears inside
the paper)

http://arxiv.org/abs/hep-ph/9712265


Martin Shough




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