Neutrino mass and anomaly in the tritium beta-spectrum. Results of the "Troitsk nu-mass" experiment.

Authors
Lobashev, VM Aseev, VN Belesev, AI Berlev, AI Geraskin, EV Golubev, AA Golubev, NA Kazachenko, OV Kuznetsov, YE Ostroumov, RP Ryvkis, LA Stern, BE Titov, NA Zadorozhny, SV Zakharov, YI
Citation
Vm. Lobashev et al., Neutrino mass and anomaly in the tritium beta-spectrum. Results of the "Troitsk nu-mass" experiment., NUCL PH B-P, 77, 1999, pp. 327-332
Citations number
13
Categorie Soggetti
Physics
Journal title
NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS
ISSN journal
09205632 → ACNP
Volume
77
Year of publication
1999
Pages
327 - 332
Database
ISI
SICI code
0920-5632(199905)77:<327:NMAAIT>2.0.ZU;2-K
Abstract
Results of the "Troitsk nu-mass" experiment on the search for the neutrino rest mass in the tritium beta-decay are presented. Study of time dependence of anomalious, bump-like structure at the end of beta spectrum reported ea rlier gives indication of periodic shift of the position of the bump with r espect to end-point energy with period of 0.5 year. New upper limit for ele ctron antineutrino rest mass m(nu) < 2.5eV/c(2) is derived after accounting for the bump. Possible variants of more sensitive facility are discussed.