Pions don’t want to decay into faster-than-light neutrinos, study finds
In the December 24 issue of Physical Review Letters, WUSTL physicist Ramanath Cowsik and his collaborators put their finger on a problem with the now-famous OPERA experiment that reported faster-than-light, or superluminal, neutrinos last September. Cowsik raises theoretical considerations that would make the creation of superluminal neutrinos impossible.