Jul 16 – 22, 2009
Kraków, Poland
Europe/Warsaw timezone

Search for double beta decay with NEMO-3

Jul 17, 2009, 9:15 AM
Middle Lecture Hall B (Kraków, Poland)

Middle Lecture Hall B

Kraków, Poland

The Auditorium Maximum of the Jagiellonian University 33 Krupnicza Street 31-123 Kraków
Neutrino Physics I. Neutrino Physics


Dr Vera Beillet-Kovalenko (IPHC/JINR)


The NEMO-3 experiment located in the Modane Underground Laboratory (LSM) is searching for neutrinoless double beta decay. The experiment has been taking data since 2003 with seven isotopes. The main ones are 7 kg of 100Mo and 1 kg of 82Se. Data from the initial phase of the experiment show no evidence for neutrinoless double beta decay which permits setting a 90% CL lower limit on the half-life time for such a transition. From these results we can determine an upper limit on the effective Majorana neutrino mass. NEMO-3 also measures two-neutrino double beta decays for other isotopes and has reached the highest precision measurements to date. We will present the latest results for 150Nd, 130Te, 48Ca and 96Zr. Such measurements are important for reducing the uncertainties on calculations for nuclear matrix elements. NEMO-3 data can also be interpreted in terms of alternative transition models, such as weak right-handed currents or Majoron emission.

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