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Neutrino rest mass and anomaly in the tritium β spectrum

✍ Scribed by V.M. Lobashev; A.I. Belesev; A.I. Berlev; E.V. Geraskin; A.A. Golubev; O.V. Kazachenko; Yu. E. Kuzuetsov; L.A. Ryvkis; B.E. Stern; N.A. Titov; I.E. Yarykin; S.V. Zadorozhny; Yu.I. Zakharov

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
411 KB
Volume
654
Category
Article
ISSN
0375-9474

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✦ Synopsis

The results of the "Troitsk u-mass" experiment on the search for the neutrino rest mass in the tritium/~-decay are presented. The study of the time dependence of an anomalous, bump-like structure at the end of ~-spectrum reported earlier, gives an indication of a periodic shift of the position of the bump with respect to the end-point energy with a , 2 period of 0.5 year. A new upper limit for the electron antineutrino rest mass m, < 2.5 eV/c 2 is derived after taking into account the effect of the bump.

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