An upper limit on additional neutrino mass eigenstate in 2 to 100 eV region from 'Troitsk nu-mass' data

Autor:	Belesev, A. I., Berlev, A. I., Geraskin, E. V., Golubev, A. A., Likhovid, N. A., Nozik, A. A., Pantuev, V. S., Parfenov, V. I., Skasyrskaya, A. K.
Rok vydání:	2012
Předmět:	High Energy Physics - Experiment High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
DOI:	10.1134/S0021364013020033
Popis:	We performed a search for any sign of an additional neutrino mass state in beta-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% C.L. upper limit for the contribution of a heavy eigenstate into electron neutrino is around or less than 1% for masses above 20 eV. Comment: One recent reference added, 3 pages, 1 figure
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1211.7193 Zobrazit plný text záznamu View this record from Arxiv