Number 32 (Story #2), May 1, 1991 by Phillip F. Schewe and Ben Stein EVIDENCE FOR A HEAVY NEUTRINO persists in an experiment being carried out at the Lawrence Berkeley Lab. Eric Norman (415-486-7483) and his colleagues study the beta decay of carbon-14 dissolved in a germanium detector. Writing in the May 13 issue of Physical Review Letters, the LBL team reports that in 1.4% of the decays, a neutrino (or some other unexplained neutral particle) with a mass of 17+/- 2 keV is emitted. This conclusion is similar to those reached by experimenters at Oxford (UK) and Zagreb (Yugoslavia). At last week's APS Spring meeting in Washington, D.C., Norman said that his group would continue its solid-state detector work but would also attempt to mount an experiment involving a gas-filled detector. Certain experiments done elsewhere, including a recent one at Caltech (Felix Boehm, 818-356-4266), fail to find evidence of the heavy neutrino. (Physics Today, May 1991.)