Results from the NEMO 3 experiment

Abstract

The aim of the NEMO 3 experiment is the search for neutrinoless double beta decay and precise measurement of two-neutrino double beta decay of several isotopes. The experiment has been taking data since 2003. Since no evidence for neutrinoless double beta decay of Mo100 and Se82 has been found, a 90% C.L. lower limit on the half-life of this process and corresponding upper limit on the effective Majorana neutrino mass are derived. The data are also interpreted in terms of alternative models, such as weak right-handed currents or Majoron emission. In addition, NEMO 3 has performed precision measurements of the two-neutrino double beta decay for seven different isotopes. The most recent experimental results of NEMO 3 are presented in this paper.

5 pages, 2 tables, talk at the 10th ICATPP Conference (Como, Italy, 8 - 12 October 2007)

References in corpus (5)

• Erratum: Assessment of uncertainties in QRPA $0\nu \beta \beta$-decay nuclear matrix elements [Nucl. Phys. A 766, 107 (2006)]
• First results of the search of neutrinoless double beta decay with the NEMO 3 detector
• Technical design and performance of the NEMO3 detector
• Limits on different Majoron decay modes of ${}^{100}$Mo and ${}^{82}$Se for neutrinoless double beta decays in the NEMO-3 experiment
• Light-neutrino mass hierarchies, nuclear matrix elements, and the observability of neutrinoless double-beta decay