Nemo 3 Experiment : Preliminary Results from 2003 Data
نویسنده
چکیده
The NEMO-3 detector installed in the Modane Underground Laboratory (LSM, France) is running to search for neutrinoless double beta decay (ββ0ν) with an expected sensitivity for the effective Majorana neutrino mass down to 0.1 eV. New preliminary limits (90% CL), T 1/2 (ββ0ν) > 1.0 · 10 23 y (right-handed currents) and T 1/2 (ββ0ν) > 1.9 · 10 23 y (massive mechanism) were established analyzing 100 Mo data collected during 3800h of measurements in 2003. This is the world's best result for 100 Mo. New preliminary half-lives of ββ2ν-mode for 100 Mo, 82 Se, 116 Cd, 150 Nd are also reported as well as the results of background studies. The future progress and plans of the NEMO-3 project are discussed.
منابع مشابه
ar X iv : h ep - e x / 03 06 02 7 v 1 1 1 Ju n 20 03 STATUS REPORT ON THE NEMO 3 EXPERIMENT
The NEMO 3 detector, now operating in the Fréjus Underground Laboratory, is devoted to search for neutrinoless double beta decay ; the expected sensitivity for the effective neutrino mass (< mν >) is on the order of 0.1 eV. The performances of the tracking detector are presented. The first and very preliminary results concerning the background and the double beta signal are given.
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