Search for heavy neutrinos in β decay
Apalikov A. M., Boris S. D., Golutvin A. I., Laptin L. P., Lyubimov V. A., Myasoedov N. F., Nagovitsyn V. V., Novikov E. G., Nozik V. Z., Soloshchenko V. A., Tikhomirov I. N., Tret'yakov E. F.
The β spectrum of 35S has been measured. Upper limits on the mixing ratios are found over the heavy-neutrino mass interval 5-80 keV/c2.