Abstract
The positron spectrum from the decay has been examined for evidence of peaks arising from an admixture in the weak eigenstate of massive neutrinos. Limits on the intensity of such peaks, together with the measured branching ratio, have been used to derive constraints on the neutrino mixing parameters over the range .
- Received 18 November 1982
DOI:https://doi.org/10.1103/PhysRevLett.50.1546
©1983 American Physical Society