Finding puts brakes on faster-than-light neutrinos. Neutrinos and relativity: Faster than the speed of light. Neutrino Articles - Evidence of Faster-Than-Light Neutrinos Puzzles Scientists. Neutrino Articles - Particle Physicists Chasing Ghosts. Neutrino Articles - Was Einstein Wrong? Neutrino Articles - Charge of the Light Brigade. Physicists at the Gran Sasso National Laboratory in Italy claim they observed particles that move faster than light.
Photo by Randal Schwartz It’s not exactly Romney vs. Cain, but the Einstein vs. speedy neutrinos debate has captured the world of particle physics like a presidential debate rivets New Hampshire. Neutrino Articles - 0706.0437v3.pdf (application/pdf Object) Neutrino Articles - Those faster-than-light neutrinos. Four things to think about. As you have probably noticed by now, neutrinos from one of the accelerators at CERN are regularly fired 730 km through the Alps and across Italy to the Gran Sasso lab, where some of them are detected by the Opera experiment.
This experiment is designed to measure how the neutrinos change their properties as they go. But they also have some very precise GPS positions and timing measurements. So they know the distance the neutrinos travel, they know how long it takes them, and they can therefore measure the speed. Since neutrinos have a tiny mass, the speed should be very close to the speed of light. Neutrino Articles - Particles break light-speed limit. Neutrino Articles - 1748-0221_4_04_P04018.pdf (application/pdf Object)