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[Pop Sci] Physicists Say Speed-of-Light-Breaking Neutrinos Would've Lost Their Energy

post #1 of 98
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Last week’s bombshell physics news--those superluminal neutrinos that CERN’s OPERA experiment clocked moving faster than the speed of light--are already getting the rigorous vetting that OPERA’s researchers were hoping for. And some physicists are already rejecting the notion that CERN’s neutrinos broke the cosmic speed limit outright. A paper posted late last week, titled “New Constraints on Neutrino Velocities,†argues that any particle traveling faster than light would shed a great deal of their energy along the way.

And since that didn’t happen, those neutrinos couldn’t have traveled faster than light. Case closed.
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post #2 of 98
Oh those theorists.....
 
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post #3 of 98
The original publisher's probably know this but want assistence in figuring out the cause of the results though. The believe they have accounted for every variable and tolerances are wide enough.
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post #4 of 98
So they didn't actually test the theory, they are stating its not possible because the neutrino didn't lose enough energy? I'll wait for some one to actually perform the same test.
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post #5 of 98
Didn't lose energy?

Simple, it's a super neutrino.
post #6 of 98
Seems like CERN was just looking for attention, it really worked though if that's all that they were after.
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post #7 of 98
Quote:
Originally Posted by vspec View Post
Didn't lose energy?

Simple, it's a super neutrino.
snip
No it was aliens!.
    
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post #8 of 98
Hey, we discovered something that may challenge accepted theory. Check this for me.
Nope, it breaks another accepted theory.
Case closed.

All this does is say there is conflict with known theory. They don't explain the observation. Although I do agree that measurement error is more likely.

They think that:

Quote:
...in all likelihood these neutrinos never achieved superluminal speeds. The anomaly is an error in the data or measurement of the speed, or some other brand of misunderstanding or miscalculation.
Quote:
Still, the jury remains out on this one, and we certainly don’t want to dismiss a perfectly good game-changing science story just because it seems hard to reconcile with the status quo. After all, if OPERA’s result turns out to be confirmed it is going to completely reorient physics as we know them.

Edited by _02 - 10/4/11 at 8:56am
    
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post #9 of 98
Wasn't actually a "paper" (it's literally 3 pages) more of an argument against superluminal neutrino's based on what we currently theorize.

Flawed argument for 2 reasons:
1. It assumes current theories are correct and have no exceptions. It also completely ignores the possibility that String and M-theory are correct as both have explanations for this behavior that do NOT violate relativity.

2. Uses data based on 10MeV neutrino's. CERN's experiment was done with neutrinos in the GeV (over 1,000 times more energy) range which is NOT seen in nature. Hence, one of the big reason's CERN wants others to repeat the experiment as this may be a potential reason we're seeing this for the first time.

actual paper: http://arxiv.org/PS_cache/arxiv/pdf/...109.6562v1.pdf
Edited by banthracis - 10/4/11 at 9:03am
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post #10 of 98
Quote:
Originally Posted by _02 View Post
Hey, we discovered something that may challenge accepted theory. Check this for me.
Nope, it breaks another accepted theory.
Case closed.

All this does is say there is conflict. They don't explain the observation.
Exactly. I want to see the test actually repeated by someone else.
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