So much so that they even detect slow earth crust migration and millimetres of changes in distance between source and destination when something like an earthquake occurs. After all, this isnt the first report of improbably speedy neutrinos. They discard one of the basic assumptions of relativity, a symmetry that makes the laws of physics look the same when viewed from different reference frames. Faster-Than-Light Neutrinos Aren't - Scientific American "This is reassuring that it's not the end of the story.". It's not them. By identifying identical patterns at input and output streams, they can identify how long it took particles to travel between the points. That's why everyone is so excited about it. This is a place that people are examining for subtle effects. You can see their analysis in section 6 of the paper. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Remember, from the reference frame of someone on the satellite, we're not moving, but the Earth is. The new setup (3 ns pulses, 20 times shorter than the observed effect) has eliminated the last two points. Ask Ethan: Do Neutrinos Always Travel At Nearly The Speed Of Light? @jonathan I'll delete my answer if neutrinos travelling faster than c is confirmed, big question or not ;). @celtschk right, but I'm accounting for the small probability that the known laws of physics are wrong. Other be no scale-dependent wiggles seen in galaxy clustering. If so, the observation would wreck Einstein's theory of special relativity, which demands that nothing can travel faster than light. The one-way light speed is : $c_{A}^{r}=\frac{c_{0}}{1+V/c_{0}\cdot\cos\phi_{A}}$. Are Neutrinos not faster than light I'm sure they spent an entire year shitting pineapples because they couldn't identify the problem. As the neutrino experiment goes by, we start timing one of the neutrinos as it exits the source in Switzerland. As an experimentalist I don't begrudge the OPERA guys their error at all. WebIn September 2011, OPERA researchers observed muon neutrinos apparently traveling faster than the speed of light. All four, including the experiment behind the first faster-than-light findings, called OPERA, found that this time around, the nearly massless neutrinos traveled quickly, but not that quickly. The result may be announced as soon as November or December. All Things Neutrino was developed byFermi National Accelerator Laboratory, Americas premier laboratory for particle physics and accelerator research. After painstakingly checking and rechecking their data, physicists working on Italys OPERA experiment say they have clocked neutrinos traveling faster than the speed of light. @MSalters: I agree. @nominator: Any relativistic effect cannot make the speed superluminal. If so, would it be a real violation of Lorentz invariance or an "almost, but not quite" effect. You have a few longer answers which were already updated, but here is a concise statement of the situation in mid-2014: An independent measurement by the ICARUS collaboration, also using neutrinos traveling from CERN to Gran Sasso but using independent detector and timing hardware, found detection times "compatible with the simultaneous arrival of all events with equal speed, the one of light.". With due respect to everyone, this reminds of the old EPR remark by Einstein himself - ``everybody says it is wrong for some reason or the other, but curiously, no two people agree on what exactly is wrong with it''. In addition, when you measured the momentum of electron and the post-decay nucleus, it didnt match the initial momentum of the pre-decay nucleus. STDs are at a shocking high. "So far no arguments have been put forward that rule out our effect," Dr Ereditato said. That being said, I don't know the field inside-out and I'm sure some theorist has come up with some wacky idea that allows it. If I were conspiratorially minded, I would say they are covering up an uncorrected relativistic effect with a bogus story of a hardware error. Neutrinos | New Scientist It's still gossip, so take this with abundance of caution, but here's what he had to say: According to sources familiar with the experiment, the 60 nanoseconds discrepancy appears to come from a bad connection between a fiber optic cable that connects to the GPS receiver used to correct the timing of the neutrinos flight and an electronic card in a computer. Neutrino 'faster than light' scientist resigns - BBC News If confirmed by other experiments, the find could undermine one of the basic principles of modern physics. If the neutrino always moved at the speed of light, it would be impossible to move faster than the neutrino. E.g., the delay in the 8.3-km optical fiber has been measured both by two-way timing and using a portable clock, and it's been measured repeatedly over time so that one can rule out changes in optical properties due to aging of the plastic. faster than light - Superluminal neutrinos - Physics Stack Exchange Yet another reason for disbelief is that the velocity of propagation of neutrinos has been measured to much higher precision by other techniques, so if you want to believe the OPERA result, you have to posit a very strange energy-dependence of the velocity. It took more than two decades from when it was first predicted to when it was finally detected, and they came along with a bunch of surprises that make them unique among all the particles that we know of. This image shows multiple events, and is part of the suite of experiments paving our way to a greater understanding of neutrinos. [ Physics Letters B 150, 431 (1985)] A comment on fermionic tachyons and Poincar representations by