Astronomy and Astrophysics – Astrophysics
Scientific paper
Apr 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aps..apr.o7009m&link_type=abstract
American Physical Society, April Meeting, Jointly Sponsored with the High Energy Astrophysics Division (HEAD) of the American As
Astronomy and Astrophysics
Astrophysics
Scientific paper
Interest in, and the relevance of, next-generation 0ν ββ-decay experiments is increasing. Even with nonzero neutrino mass essentially established by experiments sensitive to δ m^2, double-beta decay experiments are still the only way to establish the Dirac or Majorana nature of neutrinos by measuring < m_νe >, the effective electron neutrino mass. For ^76Ge experiments, sensitivity to the range 0.02 eV--0.07 eV is projected based on previous and current background control efforts. A baseline plan for the Majorana Project to achieve sensitivity to this effective neutrino mass will be presented. The impact of pulse-shape discrimination and detector segmentation on the dominant residual backgrounds from cosmogenic ^68Ge and ^60Co, produced in germanium during above-ground exposure, is considered. Collaboration progress against the technical challenges of the baseline plan will be discussed.
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