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A few years ago there was a story about the Large Hadron Collider where a possible tachyon was supposedly observed. It was later shown it didn't occur yet the incident made me think. If a large experiment using extreme amounts of energy trying to duplicate some processes or events of the 'distant' past , would the intense amount of energy in this 'early' Universe experiment create a situation where the speed of light was different?? If a particle was observed emanating from this experiment and it seemed superluminal could this be due to a different speed of light measurement due to this phenomenon.

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marked as duplicate by Brandon Enright, Qmechanic Apr 11 '14 at 10:27

This question was marked as an exact duplicate of an existing question.

Are you talking about the OPERA neutrinos? That had absolutely nothing to do with the LHC (and as the answer explains, was shown to be a faulty measurement). – David Z Apr 11 '14 at 4:19
To be very clear, OPERA involved CERN, but the LHC is not CERN. LHC is at CERN, but it is only one of a great many things at CERN. OPERA's neutrino beam was produced by a different accelerator (the SPS). – dmckee Apr 11 '14 at 4:30

Unfortunately, this result was later found to be caused by faulty electronics, according to the CERN press release.

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