Neutrino plus rapide que la lumière3/24/2024 ![]() ![]() The resolution turned out to be mundane: there was an error with the experimental setup in the form of a loose cable. The path of the neutrinos produced at CERN and detected in Italy. The result flew in the face of a century of experiments and one of our most hallowed and well-verified theories: Einstein's relativity. ![]() Neutrinos, of such low mass and such high energy, should travel at a speed indistinguishable from c, the speed of light. Instead, the neutrinos arrived 60 nanoseconds (6 × 10^-8 seconds) earlier than they should have, setting off a flurry of papers, speculations and wild explanations. The arrival time should have been very precise: 2.4 millliseconds after the collision that generated them, to an incredible accuracy. The way the experiment worked was simple, as neutrinos generated in the Large Hadron Collider were sent through the Earth (so that all the other particles would be absorbed by the intervening matter) and then detected hundreds of miles away in a very intricate setup. It's been five years since the OPERA collaboration announced a bizarre, unexpected and perhaps revolutionary result to a normal experiment: particles were observed to move faster than the speed of light - the ultimate cosmic speed limit - would allow. The OPERA collaboration famously observed a faster result a few years ago. Sending any particles through hundreds of kilometers of space should always result in the particles. ![]()
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