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Open Access Publications from the University of California

Neutrinoless Double Beta Decay in Light of SNO Salt Data

  • Author(s): Murayama, Hitoshi
  • et al.

In the SNO data from its salt run, probably the most significant result is the consistency with the previous results without assuming the 8B energy spectrum. In addition, they have excluded the maximal mixing at a very high confidence level. This has an important implication on the double beta decay experiments. For the inverted or degenerate mass spectrum, we find bar _ee bar > 0.013 eV at 95percent CL, and the next generation experiments can discriminate Majorana and Dirac neutrinos if the inverted or degenerate mass spectrum will be confirmed by the improvements in cosmology, tritium data beta decay, or long-baseline oscillation experiments.

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