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First Results of the Search for Neutrinoless Double-Beta Decay with the NEMO 3 Detector

Thomas, J; Arnold, R; et, al; (2005) First Results of the Search for Neutrinoless Double-Beta Decay with the NEMO 3 Detector. Physical Review Letters , 95 (18) , Article 182302. 10.1103/PhysRevLett.95.182302. Green open access

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Abstract

The NEMO 3 detector, which has been operating in the Frejus underground laboratory since February 2003, is devoted to the search for neutrinoless double beta decay (bb0nu). Half-lives of the two neutrino double beta decays (bb2nu) have been measured for 100Mo and 82Se. After 389 effective days of data collection from February 2003 until September 2004 (Phase I), no evidence for neutrinoless double beta decay was found from ~7kg of 100Mo and ~1 kg of 82Se. The corresponding lower limits for the half-lives are 4.6 x 10^23 years for 100Mo and 1.0 x10^23 years for 82Se (90% C.L.). Depending on the nuclear matrix elements calculation, limits for the effective Majorana neutrino mass are <m> < 0.7-2.8 eV for 100Mo and <m> < 1.7-4.9 eV for 82Se.

Type: Article
Title: First Results of the Search for Neutrinoless Double-Beta Decay with the NEMO 3 Detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1103/PhysRevLett.95.182302
Publisher version: http://dx.doi.org/10.1103/PhysRevLett.95.182302
Language: English
Additional information: © 2005 The American Physical Society
Keywords: First, results, NEMO-III
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/27018
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