Tuesday, July 23, 2013

1307.5687 (A. I. Belesev et al.)

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

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

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