Limits on different majoron decay modes of 100Mo and 82Se for neutrinoless double beta decays in the NEMO-3 experiment

The NEMO-3 tracking detector is located in the Fréjus Underground Laboratory. It was designed to study double beta decay in a number of different isotopes. Presented here are the experimental half-life limits on the double beta decay process for the isotopes 100Mo and 82Se for different majoron emission modes and limits on the effective neutrino–majoron coupling constants. In particular, new limits on “ordinary” majoron (spectral index 1) decay of 100Mo (T1/2>2.7×1022 yr) and 82Se (T1/2>1.5×1022 yr) have been obtained. Corresponding bounds on the majoron–neutrino coupling constant are gee<(0.4–1.8)×10−4 and <(0.66–1.9)×10−4

Effects of architectural issues on a km3 scale detector

Simulation results showing the comparison between the performance of different km3 detector geometries are reported. Effective neutrino areas and angular resolutions are reported for three different geometries based on NEMO-towers and strings. The results show that the NEMO-tower based detector has the best performance concerning both the effective area and the angular resolution isotropyComment: to be published on VVVNT2 proceedings (Catania, Italy, November 8-11, 2005

Results from NEMO 3

The NEMO 3 experiment is located in the Modane Underground Laboratory and has been taking data since 2003 with seven isotopes. It is searching for the double beta decay process with two or zero neutrinos emitted in the final state. Precision measurements of the half-life of the isotopes due to two neutrino double beta decay have been performed and new results for 96Zr, 48Ca and 150Nd are presented here. Measurements of this process are important for reducing the uncertainties on the nuclear matrix elements. No evidence for zero neutrino double beta decay has been found and a 90% Confidence Level lower limit on the half-life of this process is derived. From this an upper limit can be set on the effective Majorana neutrino mass using the most recent nuclear matrix elements calculations.Comment: 4 pages, 6 figures, a paper submitted to the proceedings for the conference Neutrino0

From the first World War to the second

https://stars.library.ucf.edu/prism/1506/thumbnail.jp

From the first World War to the second

https://stars.library.ucf.edu/prism/1541/thumbnail.jp

Ajustement, alternance et intégration codique chez les Palikurs de l'Oyapock : questions de méthode et premiers résultats

National audienceUne étude des situations d’obtention des formes de passage d’une langue à l’autre dans les pratiques linguistiques des Palikurs, en interrogeant simultanément ces pratiques d’alternance, à tous les niveaux langagiers ou linguistiques