## A search for an additional neutrino mass eigenstate in 2 to 100 eV region from "Troitsk nu-mass" data - detailed analysis    [PDF]

A. I. Belesev, A. I. Berlev, E. V. Geraskin, A. A. Golubev, N. A. Likhovid, A. A. Nozik, V. S. Pantuev, V. I. Parfenov, A. K. Skasyrskaya
In this paper we present the details of our previously published results for a search for an additional neutrino mass state in $\beta$-electron spectrum from the Troitsk nu-mass experiment. Here we present steps of the analysis, show a set of likelihood functions obtained for each additional heavy mass value. We demonstrate how systematic errors were estimated. We also compare our results with those published recently for a similar analysis for Mainz data and try to explain why there is a factor of 2-3 difference in the sensitivity for an additional heavy mass.
View original: http://arxiv.org/abs/1307.5687