  The NEMO-3 experiment is searching for neutrinoless double beta decay for 2
main isotopes (100Mo and 82Se) and is studying the two-neutrino double beta
decay of seven isotopes. The experiment has been taking data since 2003 and, up
to the end of 2009, showed no evidence for neutrinoless double beta decay. Two
90 % CL lower limits on the half-lives of the transitions were obtained :
T_{1/2}^{0\nu} > 1.0 10^{24} yr for 100Mo and T_{1/2}^{0\nu} > 3.2 10^{23}$ yr
for 82Se. The corresponding limits on the effective Majorana neutrino mass are
respectively | m_nu | < 0.47 - 0.96 eV and | m_nu | < 0.94 - 2.5 eV. The
measurements of the two-neutrino double beta decays for all the isotopes have
also reached the highest precision to date.
