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Puzzling results from Cern, home of the LHC, have confounded physicists - because it appears subatomic particles have exceeded the speed of light.
Neutrinos sent through the ground from Cern toward the Gran Sasso laboratory 732km away seemed to show up a tiny fraction of a second early.
The result - which threatens to upend a century of physics - will be put online for scrutiny by other scientists.
In the meantime, the group says it is being very cautious about its claims.
"We tried to find all possible explanations for this," said report author Antonio Ereditato of the Opera collaboration.
"We wanted to find a mistake - trivial mistakes, more complicated mistakes, or nasty effects - and we didn't," he told BBC News.
"When you don't find anything, then you say 'Well, now I'm forced to go out and ask the community to scrutinise this.'"
reply to post by BIGPoJo
A neutrino ( English pronunciation: /njuːˈtriːnoʊ/,Italian pronunciation: [neuˈtriːno]) is an electrically neutral, weakly interacting elementary subatomic particle. Meaning "small neutral one", is an elementary particle that can travel past the speed of light, is electrically neutral and is able to pass through ordinary matter almost unaffected, "like a bullet passing through a bank of fog". Neutrinos have a very small, but nonzero mass. They are denoted by the Greek letter ν (nu). Neutrinos are similar to the more familiar electron, with one crucial difference: neutrinos do not carry electric charge. Because neutrinos are electrically neutral, they are not affected by the electromagnetic forces which act on electrons. Neutrinos are affected only by the weak sub-atomic force of much shorter range than electromagnetism, and are therefore able to pass through great distances within matter without being affected by it. Neutrinos also interact gravitationally with other particles. Neutrinos are created as a result of certain types of radioactive decay or nuclear reactions such as those that take place in the Sun, in nuclear reactors, or when cosmic rays hit atoms. There are three types, or "flavors", of neutrinos: electron neutrinos, muon neutrinos and tau neutrinos. Each type also has a corresponding antiparticle, called an antineutrino. Electron neutrinos (or antineutrinos) are generated whenever protons change into neutrons, or vice versa—the two forms of beta decay. Interactions involving neutrinos are mediated by the weak interaction. Most neutrinos passing through the Earth emanate from the Sun. Every second, in the region of the Earth, about 65 billion (6.5×1010) solar neutrinos pass through every square centimeter perpendicular to the direction of the sun.
"And of course the consequences can be very serious."
Neutrons and neutrinos aren't the same thing.
Originally posted by Bob Sholtz
reply to post by Jason88
well you can make a bomb out of them that kills everyone, but leaves buildings and everything else intact. it's called the neutron bomb.
When Pauli postulated the existence of a new elementary particle, the 'neutron', in the late 1930s, he was introducing an entity to fill the gaps in the physics of the day. There was no direct evidence for such a particle; only the need to account for the missing energy in beta decay processes and to explain the statistics of some nuclei. Thus, Pauli's neutron was called into existence to solve problems in the areas of radioactivity and nuclear physics; but, in time, it would prove useful in many other areas of physics.
The aim of this paper is to describe the many uses the neutrino has had in physics since its appearance, uses that have determined the ontological status of this elusive particle. Interestingly, the experimental detection of neutrinos 50 years ago was a minor episode in understanding the nature of such particles. As we shall argue, other moments in the biography of the particle proved more significant in determining the uses of neutrinos and their ontology.