RESULTS OF THE TROITSK EXPERIMENT ON THE SEARCH FOR THE ELECTRON ANTINEUTRINO REST MASS IN TRITIUM BETA-DECAY

Authors
BELESEV AI BLEULE AI GERASKIN EV GOLUBEV AA GOLUBEV NA KAZACHENKO OV KIEV EP KUZNETSOV YE LOBASHEV VM OVCHINNIKOV BM PARFENOV VI SEKACHEV IV SOLODUKHIN AP TITOV NA YARYKIN IE ZAKHAROV YI BALASHOV SN SPIVAK PE
Citation
Ai. Belesev et al., RESULTS OF THE TROITSK EXPERIMENT ON THE SEARCH FOR THE ELECTRON ANTINEUTRINO REST MASS IN TRITIUM BETA-DECAY, Physics letters. Section B, 350(2), 1995, pp. 263-272
Citations number
10
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
350
Issue
2
Year of publication
1995
Pages
263 - 272
Database
ISI
SICI code
0370-2693(1995)350:2<263:ROTTEO>2.0.ZU;2-O
Abstract
The end-point region of the P-spectrum of tritium has been measured wi th an integral electrostatic spectrometer with adiabatic magnetic coll imation and gaseous tritium source. The search for the neutrino rest m ass has resulted in m(v)(2) = -22 +/- 4.8 eV(2)/c(4). It is shown that the negative m(v)(2) effect may be explained by the local enhancement in the region 7-15 eV below the end point with an integral B.R. of ab out 10(-10). After accounting for this anomaly one is able to deduce t hat m(v) < 4.35 eV at 95% C.L.