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VOLUME 97 | ISSUE 2 | PAGE 73
An upper limit on additional neutrino mass eigenstate in 2 to 100 eV region from "Troitsk nu-mass" data
Abstract
We performed a search for any sign of an additional neutrino mass state in β-electron spectrum based on data reanalysis of direct electron antineutrino mass measurements in Tritium beta-decay in the Troitsk nu-mass experiment. The existing data set allows us to search for such a state in the mass range up to 100 eV. The lowest value at a 95 neutrino is around or less than 1