Neutrinoless Double Beta Decay in Light of SNO Salt Data

Details Neutrinoless Double Beta Decay in Light of SNO Salt Data Neutrinoless Double Beta Decay in Light of SNO Salt Data

2003-09-11

arxiv.org/abs/hep-ph/0309114v2

Phys.Rev.D69:031301,2004

Physics

High Energy Physics

High Energy Physics - Phenomenology

REVTEX4, three figures. Now uses the updated SK atmospheric data rather than naive rescaling. Conclusion unchanged. References

Scientific paper

10.1103/PhysRevD.69.031301

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 |_{ee}| > 0.013 eV at 95% 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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