Neutrinos that go beyond light speed? Not so fast, say two theoretical physicists.
In a terse, peremptory-sounding paper posted online on September 29, Andrew Cohen and Sheldon Glashow of Boston University calculate that any neutrinos traveling faster than light would radiate energy away, leaving a wake of slower particles analogous to the sonic boom of a supersonic fighter jet. Their findings cast doubt on the veracity of measurements recently announced at CERN (and posted online here) that clocked neutrinos going a sliver faster than light.
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