Faster-Than-Light Result to Be Scrutinized

The OPERA collaboration, which made headlines around the world last month when it announced that it had apparently observed neutrinos traveling faster than the speed of light, has decided that it will carry out a new set of very precise measurements in order to check its controversial result. The decision means the group will delay submitting its result to a peer-reviewed journal by up to a month. The move also comes in the wake of heated disagreements between collaboration members regarding the solidity of its superluminal claim—and whether it was announced prematurely. OPERA (Oscillation Project with Emulsion-Tracking Apparatus) uses a detector located under the Gran Sasso mountain in central Italy to study the properties of neutrinos that travel some 730 kilometers through the Earth's crust after being produced at the CERN laboratory in Geneva. In a paper uploaded to the arXiv preprint server on 22 September, the collaboration reported that neutrinos observed between 2009 and 2011 appeared to have traveled faster than light, arriving about 60 nanoseconds earlier than precise calculations predicted they should.
Some members of the 160-strong collaboration, however, believe that further checks are needed to be absolutely sure that the result was not due to an error.
And there has been intense discussion within the collaboration about whether those extra checks should be carried out before submitting the result to peer review. It now appears that those urging caution have prevailed, with a new set of measurements to be carried out ahead of any submission.For more details Click here


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