Particle physicists at CERN are rerunning an experiment that produced the unusual results( news released in September 2011) that neutrinos sent 720 or 730 kilometers away to a facility in Italy were arriving a little bit faster than light speed.
Using shorter pulses of neutrinos to offset potential measuring deformations on devices caused by local gravitational field variations (possibly) the results of the new series of tests will be released in a few weeks.
Two experimental projects based in Gran Sasso Italy are directly making observations upon the momentum (speed) and behavior (quality) of arriving neutrinos. OPERA is the group that discovered the superluminal arrival time, while ICARUS scientists have noticed that the neutrinos do not conform to a prediction by two Boston University physicists that the neutrinos traveling faster than light ought to give up some energy as do photons traveling through water where light speed is slower than in a vacuum.
I would think that particles traveling faster than light should have no mass at all; their pure energy might be converted into a dimensional field and be just information.
Glashow and Cohen of Boston U. seem to believe that if the neutrinos are traveling faster than light through a slow medium they should also give up some pairs of particles (energy). other theoretical physicists offer the opinion that the particles might travel a shorter distance through extra dimensional shortcuts (like flying through the Earth rather than over its surface to an opposite spot on the globe).
http://www.guardian.co.uk/science/2011/oct/28/physicists-check-neutrinos-faster-light
http://www.cbc.ca/news/technology/story/2011/10/31/science-neutrinos-faster-than-light-cern.html
http://www.scientificamerican.com/article.cfm?id=finding-halts-faster-than-light-neutrinos
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