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Autor:
A. V. Derbin, V. N. Muratova, I. S. Drachnev, E. V. Unzhakov, L. M. Tukkhonen, D. A. Semenov, N. V. Pilipenko, A. Kh. Khusainov, I. S. Lomskaya
Publikováno v:
JETP Letters. 108:499-503
Spectra of electrons from beta decays of 144Ce–144Pr nuclei have been measured and analyzed in order to find a contribution from a heavy neutrino. For the neutrino with the mass mνH in the interval of 150–350 keV, a new upper bound |UeH|2 ≤ (2