Published November 17, 2011
| Published
Journal Article
Open
Observation of Two-Neutrino Double-Beta Decay in ^(136)Xe with the EXO-200 Detector
- Creators
- Ackerman, N.
-
Vogel, P.
- EXO Collaboration
Abstract
We report the observation of two-neutrino double-beta decay in ^(136)Xe with T_(1/2)=2.11±0.04(stat)±0.21(syst)×10^(21) yr. This second-order process, predicted by the standard model, has been observed for several nuclei but not for ^(136)Xe. The observed decay rate provides new input to matrix element calculations and to the search for the more interesting neutrinoless double-beta decay, the most sensitive probe for the existence of Majorana particles and the measurement of the neutrino mass scale.
Additional Information
© 2011 American Physical Society. Received 21 August 2011; published 17 November 2011. EXO-200 is supported by DOE and NSF in the United States, NSERC in Canada, SNF in Switzerland, and RFBR in Russia. The Collaboration gratefully acknowledges the hospitality of WIPP.Attached Files
Published - Ackerman2011p16445Phys_Rev_Lett.pdf
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Ackerman2011p16445Phys_Rev_Lett.pdf
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Additional details
- Eprint ID
- 28404
- Resolver ID
- CaltechAUTHORS:20111209-143210859
- Department of Energy (DOE)
- NSF
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- SNF Switzerland
- RFBR Russia
- Created
-
2011-12-09Created from EPrint's datestamp field
- Updated
-
2021-11-09Created from EPrint's last_modified field