ICARUS already had a very compelling result to initially challenge OPERA's superluminal neutrinos claim. Then OPERA revealed that they had some timing errors in their electronics that could sway things one way or the other. Now comes the most direct challenge so far of the OPERA's result, again from ICARUS, which not only use the neutrinos created from the same source (CERN), but also with detectors that are in almost the same location as OPERA!
THREE weeks ago the OPERA collaboration in Italy found a possible glitch that may account for its startling finding last September that elusive particles called neutrinos move faster than light, in flagrant disregard of Albert Einstein's theory of relativity. Now the first crosscheck from a rival experiment seems to vindicate the overwhelming majority of physicists who were convinced all along that some error must have crept in to OPERA's analysis. On March 16th the ICARUS collaboration posted a paper on arXiv, an online repository, which reports that neutrinos they looked at are not travelling faster than light, after all.I'm sure the OPERA's folks will still redo their measurements (if they haven't started already considering that the LHC is back circulating protons). But so far, in terms of experimental results, there hasn't been anything to support such superluminal neutrinos.