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No energy dependence of the velocities of neutrinos or antineutrinos is observed within the statistical and systematic errors over the energy range 30 to 200 GeV. The velocity differences (95% confidence level) are |_-|<0. 710^-4, |₊-_{}|<0. 510^-4, and | () -_ (corrected) |=| () -1|<0. 410^-4, where =vc.
Kalbfleisch et al. (Mon,) studied this question.