Limits on neutrinoless ββ decay, including that with majoron emission
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ID: 265617
1987
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Abstract
Neutrinoless double-\ensuremath{\beta} decay would require two new phenomena, of which one is lepton-number nonconservation. Among several candidates for the other are nonzero neutrino mass and the emission of a Goldstone boson, such as the majoron. For the former possibility our Ge-detector array now sets a limit for the ${0}^{+}$\ensuremath{\rightarrow}${0}^{+}$ transition in $^{76}\mathrm{Ge}$ of ${T}_{1/2}$>5\ifmmode\times\else\texttimes\fi{}${10}^{23}$ yr from the fluctuation in the background or almost a factor of 2 longer by maximum likelihood at the 68% confidence level (C.L.). For the latter process we have a 90%-C.L. limit of 1.4\ifmmode\times\else\texttimes\fi{}${10}^{21}$ yr, a result in disagreement with a recent possible observation of majoron emission.
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caldwell1987physicallimits
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| Authors | D. O. Caldwell;R. M. Eisberg;D. M. Grumm;M. S. Witherell;F. S. Goulding;A. R. Smith; |
| Journal | physical review letters |
| Year | 1987 |
| DOI |
doi:10.1103/PhysRevLett.59.419
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