Oscar_Cunningham comments on Particles break light-speed limit? - Less Wrong

9 Post author: Kevin 23 September 2011 11:00AM

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Comment author: Oscar_Cunningham 24 September 2011 05:45:04PM 1 point [-]

In particular, if they traveled as fast as CERN predicted then they should have arrived about 3-5 year before the photons.

Is this just assuming that they travel at the same speed as recorded for the CERN ones, or has any adjustment been made for their differing energies?

Comment author: JoshuaZ 24 September 2011 06:17:57PM 1 point [-]

This is from a naive, back of the envelope calculation without taking differing energies into account. One thing to note that by some estimates tachyons should slow down as they get more energy. If that's the case then the discrepancy may make sense since the neutrinos from the supernova should be I think higher energy.

Comment author: Oscar_Cunningham 24 September 2011 06:42:35PM 3 points [-]

If that's the case then the discrepancy may make sense since the neutrinos from the supernova should be I think higher energy.

Nope. As I said here the ones at CERN are 17GeV, whereas the ones from the supernova were 6.7MeV.

Comment author: JoshuaZ 24 September 2011 08:13:56PM 3 points [-]

Ok. In that case this hypothesis seriously fails.

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