Bernatowicz, T. ; Brannon, J. ; Brazzle, R. ; Cowsik, R. ; Hohenberg, C. ; Podosek, F. (1992) Neutrino mass limits from a precise determination of ββ-decay rates of 128Te and 130Te Physical Review Letters, 69 (16). pp. 2341-2344. ISSN 0031-9007
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Official URL: http://prl.aps.org/abstract/PRL/v69/i16/p2341_1
Related URL: http://dx.doi.org/10.1103/PhysRevLett.69.2341
Abstract
Double beta decay of 128Te has been confirmed and the ratio of half-lives for ββ decay of 130Te and 128Te has been determiend as 130Te½/128Te½=(3.52±0.11)×10-4 by ion-counting mass spectrometry of Xe in ancient Te ores. The Xe measurements, combined with common Pb dating, yield a 130Te half-life of (2.7±0.1)×1021 yr and thus a 128Te half-life of (7.7±0.4)×1024 yr. These results give limits on the effective Majorana mass of the neutrino (<1.1-1.5 eV) and right-handed currents (||<η>||>5.3×10-8) comparable to the best obtained from direct neutrinoless ββ-decay searches. They also imply new limits on nonstandard Majorons not constrained by measurements of the Z0 decay width.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to American Physical Society. |
| ID Code: | 20727 |
| Deposited On: | 20 Nov 2010 13:40 |
| Last Modified: | 28 May 2011 10:01 |
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